There are 792 fish that start with the letter A, from Abalone to Aztec Dwarf Cichlid. Below you will find them listed alphabetically along with some general information about each. Click the toggle view buttons in the top right corner to switch between the card and the table view.
For each item you will find the following information
Order: The subclass the fish belongs to
Habitat: The places or type of weather the fish lives in
Scientific name: The designation that scientists use to catalog the species
Name: Abalone
Order: Vetigastropoda
Habitat: Marine
Scientific name: Haliotidae
Name: Abalone Snoek
Order: Thunniformes
Habitat: Marine
Scientific name: Thunnus alalunga
Name: Abbott's Grunt
Order: Perciformes
Habitat: Marine
Scientific name: Pomadasys abbotti
Name: Abbott's Halfbeak
Order: Beloniformes
Habitat: Marine; Estuarine
Scientific name: Hyporhamphus Abbott
Name: Abbott's Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax abbotti
Name: Abbott's Pipefish
Order: Syngnathiformes
Habitat: Marine
Scientific name: Fukangichthys acutipinnis
Name: Abbott's Sailfin Blenny
Order: Perciformes
Habitat: Marine
Scientific name: Cirripectes albofasciatus
Name: Abbott's Wolffish
Order: Perciformes
Habitat: Marine
Scientific name: Anarhichas orientalis
Name: Abcan
Order: Actinopterygii
Habitat: Freshwater
Scientific name: Abcan obesus
Name: Abdu's Anthias
Order: Perciformes
Habitat: Marine
Scientific name: Pseudanthias abdu
Name: Aberdeen Angelfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Genicanthus Aberdeeni
Name: Aberdeen Angler
Order: Lophiiformes
Habitat: Marine
Scientific name: Lophiodes abei
Name: Aberdeen Anglerfish
Order: Lophiiformes
Habitat: Marine
Scientific name: Lophius piscatorius
Name: Aberdeen Cod
Order: Gadiformes
Habitat: Marine; Deepwater
Scientific name: Bregmaceros Macclellandi
Name: Aboriginal Pipefish
Order: Syngnathiformes
Habitat: Marine
Scientific name: Hypselognathus horridus
Name: Abronia
Order: Actinopterygii
Habitat: Freshwater
Scientific name: Abronia
Name: Abudefduf
Order: Perciformes
Habitat: Marine
Scientific name: Abudefduf
Name: Abyssal Anglerfish
Order: Lophiiformes
Habitat: Deep Sea
Scientific name: Melanocetidae
Name: Abyssal Catshark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Apristurus profundorum
Name: Abyssal Combtooth Blenny
Order: Perciformes
Habitat: Marine
Scientific name: Ophioblennius atlanticus
Name: Abyssal Grenadier
Order: Gadiformes
Habitat: Deep Sea
Scientific name: Coryphaenoides armatus
Name: Abyssal Liparid
Order: Scorpaeniformes
Habitat: Marine; Deep Sea
Scientific name: Paraliparis Bathybius
Name: Abyssal Skate
Order: Torpediniformes
Habitat: Marine
Scientific name: Bathyraja abyssicola
Name: Abyssobrotula
Order: Ophidiiformes
Habitat: Deep sea
Scientific name: Abyssobrotula galatheae
Name: Acadian Cod
Order: Gadiformes
Habitat: Marine; Benthic
Scientific name: Gadus Morhua Mitchilli
Name: Acadian Redfish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Sebastes fasciatus
Name: Acadian Sturgeon
Order: Acipenseriformes
Habitat: Atlantic coast estuaries and rivers
Scientific name: Acipenser oxyrinchus oxyrinchus
Name: Acanthemblemaria
Order: Perciformes
Habitat: Marine (Caribbean)
Scientific name: Acanthemblemaria
Name: Acanthicus
Order: Siluriformes
Habitat: Freshwater
Scientific name: Acanthicus
Name: Acanthicus Adas
Order: Siluriformes
Habitat: Freshwater (South America)
Scientific name: Acanthicus adas
Name: Acanthicus Adone
Order: Siluriformes
Habitat: Amazon Basin
Scientific name: Acanthicus adonis
Name: Acanthicus Hystrix
Order: Siluriformes
Habitat: Freshwater (South America)
Scientific name: Acanthicus hystrix
Name: Acanthistius
Order: Perciformes
Habitat: Marine
Scientific name: Acanthistius
Name: Acanthobothrium
Order: Platyhelminthes
Habitat: Marine
Scientific name: Acanthobothrium
Name: Acanthocephala
Order: Acanthocephala
Habitat: Freshwater/Marine (parasite)
Scientific name: Acanthocephala
Name: Acanthocharax
Order: Characiformes
Habitat: Freshwater
Scientific name: Acanthocharax
Name: Acanthochromis
Order: Perciformes
Habitat: Marine
Scientific name: Acanthochromis polyacanthus
Name: Acanthocleithron
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Acanthocleithron
Name: Acanthodes
Order: Acanthodiformes
Habitat: Ancient fresh and marine waters
Scientific name: Acanthodes bronni
Name: Acanthodians
Order: Acanthodii
Habitat: Freshwater
Scientific name: Acanthodii
Name: Acanthoesox
Order: Esociformes
Habitat: Freshwater (extinct)
Scientific name: Acanthoesox
Name: Acanthogobius
Order: Perciformes
Habitat: Marine/Brackish
Scientific name: Acanthogobius
Name: Acantholatris
Order: Perciformes
Habitat: Marine
Scientific name: Acantholatris
Name: Acanthopagrus
Order: Perciformes
Habitat: Marine/Brackish
Scientific name: Acanthopagrus
Name: Acanthoplesiops
Order: Perciformes
Habitat: Marine
Scientific name: Acanthoplesiops
Name: Acanthorhodeus
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Acanthorhodeus
Name: Acanthoscapheus
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Acanthoscapheus
Name: Acanthurus
Order: Perciformes
Habitat: Marine
Scientific name: Acanthurus
Name: Acanthurus Achilles
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus achilles
Name: Acanthurus Auranticavus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus auranticavus
Name: Acanthurus Bariene
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus bariene
Name: Acanthurus Blochii
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus blochii
Name: Acanthurus Chronixis
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus chronixis
Name: Acanthurus Coeruleus
Order: Perciformes
Habitat: Marine (Atlantic)
Scientific name: Acanthurus coeruleus
Name: Acanthurus Dussumieri
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus dussumieri
Name: Acanthurus Fowleri
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus fowleri
Name: Acanthurus Guttatus
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus guttatus
Name: Acanthurus Japonicus
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus japonicus
Name: Acanthurus Leucopareius
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus leucopareius
Name: Acanthurus Leucosternon
Order: Perciformes
Habitat: Marine (Indian Ocean)
Scientific name: Acanthurus leucosternon
Name: Acanthurus Lineatus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus lineatus
Name: Acanthurus Maculiceps
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus maculiceps
Name: Acanthurus Nigricans
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Acanthurus nigricans
Name: Acanthurus Nigricauda
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus nigricauda
Name: Acanthurus Nigrofuscus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus nigrofuscus
Name: Acanthurus Olivaceus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus olivaceus
Name: Acanthurus Pyroferus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus pyroferus
Name: Acanthurus Tennentii
Order: Perciformes
Habitat: Marine (Indian Ocean)
Scientific name: Acanthurus tennentii
Name: Acanthurus Triostegus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus triostegus
Name: Acanthurus Xanthopterus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Acanthurus xanthopterus
Name: Acarichthys
Order: Perciformes
Habitat: Freshwater
Scientific name: Acarichthys heckelii
Name: Acarnatus
Order: Perciformes
Habitat: Marine
Scientific name: Acarnatus
Name: Acaronia
Order: Perciformes
Habitat: Freshwater
Scientific name: Acaronia
Name: Accra Goby
Order: Perciformes
Habitat: Marine (Atlantic)
Scientific name: Gobionellus occidentalis
Name: Accretion Fish
Order: Beryciformes
Habitat: Marine
Scientific name: Monocentris reedi
Name: Acerina
Order: Perciformes
Habitat: Freshwater lakes and rivers of Eurasia
Scientific name: Gymnocephalus cernua
Name: Acetabularia Goby
Order: Perciformes
Habitat: Marine (Mediterranean)
Scientific name: Gobius platycephalus
Name: Acheilognathus
Order: Cypriniformes
Habitat: Freshwater rivers and lakes of East Asia
Scientific name: Acheilognathus rhombeus
Name: Acheilognathus rhombeus
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Acheilognathus rhombeus
Name: Achiridae
Order: Pleuronectiformes
Habitat: Marine/Brackish
Scientific name: Achiridae
Name: Achiroides
Order: Pleuronectiformes
Habitat: Freshwater/Brackish
Scientific name: Achiroides
Name: Achirus
Order: Pleuronectiformes
Habitat: Marine/Brackish
Scientific name: Achirus
Name: Achirus Lineatus
Order: Pleuronectiformes
Habitat: Marine (Atlantic)
Scientific name: Achirus lineatus
Name: Achoerodus
Order: Perciformes
Habitat: Marine
Scientific name: Achoerodus
Name: Acholoceus
Order: Actinopterygii
Habitat: Marine (extinct)
Scientific name: Acholoceus
Name: Acipenseriformes
Order: Acipenseriformes
Habitat: Freshwater and marine
Scientific name: Acipenseriformes
Name: Acnodon Platinus
Order: Characiformes
Habitat: Freshwater (South America)
Scientific name: Acnodon platinus
Name: Acorn Barnacle Blenny
Order: Blenniiformes
Habitat: Tropical Eastern Pacific
Scientific name: Acanthemblemaria hancocki
Name: Acromycter Pertusus
Order: Anguilliformes
Habitat: Marine (Deepwater)
Scientific name: Acromycter pertusus
Name: Acropoma Japonicum
Order: Perciformes
Habitat: Marine; Deepwater
Scientific name: Acropomatidae
Name: Actinopterygii
Order: Actinopterygii
Habitat: Various
Scientific name: Actinopterygii
Name: Acuticephalus
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Acuticephalus
Name: Adelaide Pipefish
Order: Syngnathiformes
Habitat: Marine (Australia)
Scientific name: Hypselognathus horridus
Name: Adelosebastes
Order: Scorpaeniformes
Habitat: Marine; Deep Sea
Scientific name: Adelosebastes
Name: Adeonella Flathead
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Grammoplites scaber
Name: Adinia
Order: Cyprinodontiformes
Habitat: Coastal marshes and brackish waters of the southeastern US
Scientific name: Adinia xenica
Name: Adinia Xenica
Order: Cyprinodontiformes
Habitat: Freshwater/Brackish (North America)
Scientific name: Adinia xenica
Name: Adioryx
Order: Beryciformes
Habitat: Marine
Scientific name: Adioryx
Name: Adirondack Sculpin
Order: Scorpaeniformes
Habitat: Freshwater
Scientific name: Cottus cognatus
Name: Adler's Pipefish
Order: Syngnathiformes
Habitat: Marine (Pacific)
Scientific name: Corythoichthys adlerus
Name: Adlerfisch
Order: Perciformes
Habitat: Marine
Scientific name: Argyrosomus regius
Name: Adolfus' Killifish
Order: Cyprinodontiformes
Habitat: Freshwater; Temporary Pools
Scientific name: Nothobranchius Adolfi
Name: Adonis Cichlid
Order: Cichliformes
Habitat: Freshwater (Lake Tanganyika)
Scientific name: Cyprichromis leptosoma
Name: Adonis Snailfish
Order: Scorpaeniformes
Habitat: Marine; Deep Sea
Scientific name: Careproctus Adonis
Name: Adorned Coralblenny
Order: Blenniiformes
Habitat: Western Pacific coral reefs
Scientific name: Ecsenius adornatus
Name: Adorned Dwarf Goby
Order: Gobiiformes
Habitat: Indo-Pacific coral reefs
Scientific name: Trimma anaima
Name: Adrianichthys
Order: Adrianichthyiformes
Habitat: Freshwater (Sulawesi)
Scientific name: Adrianichthys
Name: Adriatic Sturgeon
Order: Acipenseriformes
Habitat: Freshwater/Brackish
Scientific name: Acipenser naccarii
Name: Aegleichthys Pistor
Order: Scorpaeniformes
Habitat: Marine (Pacific)
Scientific name: Aegleichthys pistor
Name: Aelurillus Agilis
Order: Cichliformes
Habitat: Freshwater (Lake Malawi)
Scientific name: Aelurillus agilis
Name: Aenigmacanthus
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Aenigmacanthus
Name: Aequidens
Order: Cichliformes
Habitat: South America
Scientific name: Aequidens pulcher
Name: Aequidens Diadema
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Aequidens Diadema
Name: Aeroplane Flying Fish
Order: Beloniformes
Habitat: Marine; Pelagic
Scientific name: Cheilopogon Pinnatibarbatus
Name: Aerosusa Iago
Order: Lampriformes
Habitat: Marine; Deepwater
Scientific name: Aerosusa Iago
Name: Aetapcus
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Aetapcus
Name: Afghan Barb
Order: Cypriniformes
Habitat: Freshwater (Afghanistan)
Scientific name: Capoeta buhsei
Name: Africalcaria
Order: Teleostei
Habitat: Ancient marine environments (extinct)
Scientific name: Africalcaria
Name: African Assfish
Order: Ophidiiformes
Habitat: Deep Sea
Scientific name: Acanthonus armatus
Name: African Banded Barb
Order: Cypriniformes
Habitat: Freshwater rivers and lakes of Africa
Scientific name: Enteromius fasciolatus
Name: African Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Barbus
Name: African Barracuda
Order: Scombriformes
Habitat: Marine
Scientific name: Sphyraena afra
Name: African Bellowsfish
Order: Syngnathiformes
Habitat: Marine; Deepwater
Scientific name: Macroramphosus Scolopax
Name: African Blind Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Caecobarbus geertsii
Name: African Bonytongue
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Heterotis niloticus
Name: African Bottlenose
Order: Mormyriformes
Habitat: Freshwater
Scientific name: Mormyrus longirostris
Name: African Bush Fish
Order: Perciformes
Habitat: Freshwater
Scientific name: Ctenopoma
Name: African Butterfly Rasbora
Order: Cypriniformes
Habitat: Freshwater lakes of Africa
Scientific name: Microrasbora nana
Name: African Butterflyfish
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Pantodon buchholzi
Name: African Cichlid
Order: Cichliformes
Habitat: Freshwater
Scientific name: Cichlidae
Name: African Climber
Order: Perciformes
Habitat: Freshwater rivers and floodplains of West Africa
Scientific name: Ctenopoma kingsleyae
Name: African Clown Knifefish
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Chitala ornata
Name: African Comet
Order: Cichliformes
Habitat: Freshwater (Lake Malawi)
Scientific name: Labidochromis caeruleus
Name: African Electric Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Malapterurus electricus
Name: African Flagfin
Order: Perciformes
Habitat: Freshwater
Scientific name: Epalzeorhynchos kalopterus
Name: African Freshwater Sole
Order: Pleuronectiformes
Habitat: Freshwater
Scientific name: Synaptura zebra
Name: African Glass Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Pareutropius debauwi
Name: African Gold Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Puntius 'schwanefeldi'
Name: African Gray Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus griseus
Name: African Humpback Mormyrid
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Mormyrus kannume
Name: African Knife Rasbora
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Rasbora borapetensis
Name: African Knifefish
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Gymnarchus niloticus
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Name: African Knifefish (Gymnarchus)
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Gymnarchus niloticus
Name: African Lampeye
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Aplocheilichthys normani
Name: African Lungfish
Order: Ceratodontiformes
Habitat: Freshwater
Scientific name: Protopterus aethiopicus
Name: African Moontail
Order: Cichliformes
Habitat: Freshwater (Lake Tanganyika)
Scientific name: Cyprichromis zonatus
Name: African Moony
Order: Perciformes
Habitat: Estuaries and coastal waters of West Africa
Scientific name: Monodactylus sebae
Name: African Mormyrid
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Mormyridae (various genera)
Name: African Mudfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Clarias gariepinus
Name: African Onejaw
Order: Synbranchiformes
Habitat: Freshwater
Scientific name: Monopterus indicus
Name: African Pike
Order: Characiformes
Habitat: Freshwater
Scientific name: Hepsetus ocellatus
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Name: African Pike (juvenile)
Order: Perciformes
Habitat: Freshwater
Scientific name: Hepsetus odoe
Name: African Pike Characin
Order: Characiformes
Habitat: Freshwater
Scientific name: Hepsetus odoe
Name: African Pike Cichlid
Order: Cichliformes
Habitat: Freshwater
Scientific name: Crenicichla
Name: African Pike Killifish
Order: Cyprinodontiformes
Habitat: Freshwater rivers and streams of West Africa
Scientific name: Epiplatys chaperi
Name: African Red Hump Geophagus
Order: Cichliformes
Habitat: Freshwater
Scientific name: Geophagus steindachneri
Name: African Red Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus agennes
Name: African Red Tailed Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Phractocephalus hemioliopterus
Name: African Redfin
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Barbus unitaeniatus
Name: African Redfin Haplo
Order: Cichliformes
Habitat: Lake Victoria Basin
Scientific name: Astatotilapia atra
Name: African Shark Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Pardiglanis tardus
Name: African Sharptooth Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Clarias gariepinus
Name: African Snakehead
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Parachanna obscura
Name: African Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus agennes
Name: African Speckled Mastacembelus
Order: Synbranchiformes
Habitat: Freshwater
Scientific name: Mastacembelus armatus
Name: African Spiny Eel
Order: Synbranchiformes
Habitat: Freshwater
Scientific name: Mastacembelus nigromarginatus
Name: African Spinyfin
Order: Beryciformes
Habitat: Marine
Scientific name: Diretmus argenteus
Name: African Spotfin Mojarra
Order: Gerreiformes
Habitat: Marine
Scientific name: Gerres nigri
Name: African Spotted Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Clarias gariepinus
Name: African Spotted Eel
Order: Anguilliformes
Habitat: Freshwater rivers and Africa
Scientific name: Anguilla nebulosa labiata
Name: African Spotted Knife
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Xenomystus nigri
Name: African Spotted Knifefish
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Xenomystus nigri
Name: African Spotted Puffer
Order: Tetraodontiformes
Habitat: Freshwater
Scientific name: Tetraodon lineatus
Name: African Sprat
Order: Clupeiformes
Habitat: Marine; Coastal
Scientific name: Spratelloides Gracilis
Name: African Striped Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Barbus paludinosus
Name: African Striped Killifish
Order: Cyprinodontiformes
Habitat: Freshwater rivers of Central Africa
Scientific name: Aphyosemion striatum
Name: African Striped Knife Fish
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Gymnarchus niloticus
Name: African Striped Mudfish
Order: Siluriformes
Habitat: Freshwater swamps and lakes of East Africa
Scientific name: Clarias alluaudi
Name: African Striped Sea Bream
Order: Spariformes
Habitat: Marine
Scientific name: Boops boops
Name: African Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Alestidae (various genera)
Name: African Tetras
Order: Characiformes
Habitat: Freshwater
Scientific name: Alestidae
Name: African Threadfin
Order: Polynemiformes
Habitat: Coastal waters of West Africa
Scientific name: Polydactylus quadrifilis
Name: African Tiger Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Puntius tetrazona
Name: African Tiger Perch
Order: Perciformes
Habitat: Freshwater (Extinct)
Scientific name: Perca africana
Name: African Tigerfish
Order: Characiformes
Habitat: Freshwater
Scientific name: Hydrocynus vittatus
Name: African Topminnow
Order: Cyprinodontiformes
Habitat: Freshwater rivers and streams of West Africa
Scientific name: Aplocheilichthys normani
Name: African Tyulka
Order: Clupeiformes
Habitat: Freshwater/Brackish
Scientific name: Clupeonella mardakha
Name: African Umbrellafish
Order: Gobiesociformes
Habitat: Freshwater
Scientific name: Chiloglanis niloticus
Name: African Upside Down Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Synodontis nigriventris
Name: African Upside-Down Catfish
Order: Siluriformes
Habitat: Freshwater rivers of Central Africa
Scientific name: Synodontis nigriventris
Name: African Whiptail Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Sturisoma festivum
Name: African Wolffish
Order: Perciformes
Habitat: Freshwater
Scientific name: Parachanna africana
Name: Afrocara
Order: Cichliformes
Habitat: Freshwater (Africa)
Scientific name: Afrocara
Name: Afrocaylix
Order: Siluriformes
Habitat: Freshwater rivers of Africa
Scientific name: Afrocaylix
Name: Afrocaymanops
Order: Siluriformes
Habitat: Freshwater (Africa)
Scientific name: Afrocaymanops
Name: Afrocranogobius
Order: Perciformes
Habitat: Freshwater
Scientific name: Afrocranogobius
Name: Afrotapia
Order: Perciformes
Habitat: Freshwater
Scientific name: Afrotapia
Name: Afrotetraodon
Order: Tetraodontiformes
Habitat: Freshwater (Africa)
Scientific name: Afrotetraodon
Name: Afurcating
Order: Cypriniformes
Habitat: Freshwater (Asia)
Scientific name: Afurcating
Name: Agassiz' Cavefish
Order: Percopsiformes
Habitat: Freshwater; Caves
Scientific name: Amblyopsis Spelaea
Name: Agassiz's Corydoras
Order: Siluriformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Corydoras agassizii
Name: Agassiz's Driftfish
Order: Perciformes
Habitat: Marine; Deepwater
Scientific name: Schedophilus Ovalis
Name: Agassiz's Dwarf Cichlid
Order: Cichliformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Apistogramma agassizii
Name: Agassiz's Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobius agassizii
Name: Agassiz's Killifish
Order: Cyprinodontiformes
Habitat: Freshwater ponds and streams of the southeastern US
Scientific name: Fundulus notti
Name: Agassiz's Silverside
Order: Atheriniformes
Habitat: Marine/Freshwater
Scientific name: Menidia beryllina
Name: Agassiz's Slender Clingfish
Order: Gobiesociformes
Habitat: Marine
Scientific name: Cochleoceps orientalis
Name: Agassiz's Topminnow
Order: Cyprinodontiformes
Habitat: Freshwater (North America)
Scientific name: Fundulus notidens
Name: Ageneiosus Abernathi
Order: Siluriformes
Habitat: Freshwater (South America)
Scientific name: Ageneiosus abernathi
Name: Agenjo's Conger
Order: Anguilliformes
Habitat: Marine (Atlantic)
Scientific name: Ariosoma agenjoia
Name: Agile Frogfish
Order: Lophiiformes
Habitat: Marine
Scientific name: Antennatus dorehensis
Name: Aglaia Goby
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Priolepis aglaia
Name: Agnatha
Order: Agnatha
Habitat: Marine; Freshwater; Diverse
Scientific name: Agnatha
Name: Agnes' Killifish
Order: Cyprinodontiformes
Habitat: Freshwater; Forest Streams
Scientific name: Aphyosemion Agnesae
Name: Agonopsis
Order: Scorpaeniformes
Habitat: Marine (Pacific)
Scientific name: Agonopsis
Name: Agonopsis Hozukii
Order: Scorpaeniformes
Habitat: Marine (Pacific)
Scientific name: Agonopsis hozukii
Name: Agonus Decagonus
Order: Scorpaeniformes
Habitat: Marine (Arctic)
Scientific name: Agonus decagonus
Name: Agrammus
Order: Scorpaeniformes
Habitat: Marine (North Pacific)
Scientific name: Agrammus
Name: Agulhas Sole
Order: Pleuronectiformes
Habitat: Marine (Indian Ocean)
Scientific name: Austroglossus pectoralis
Name: Ahernodus
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Ahernodus
Name: Ahl's Discus
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Symphysodon Aherdi
Name: Ahl's Killifish
Order: Cyprinodontiformes
Habitat: Freshwater (Africa)
Scientific name: Aplocheilichthys normani
Name: Ahliesaurus
Order: Aulopiformes
Habitat: Marine
Scientific name: Ahliesaurus
Name: Ahohia
Order: Cypriniformes
Habitat: Freshwater; Rivers
Scientific name: Puntius Sachsi
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Name: Aigle des Mers (Eagle Ray)
Order: Myliobatiformes
Habitat: Marine
Scientific name: Myliobatis aquila
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Name: Aiguille de Mer (Needlefish)
Order: Beloniformes
Habitat: Marine
Scientific name: Belone belone
Name: Ailia Coila
Order: Siluriformes
Habitat: Freshwater; Rivers
Scientific name: Ailiidae
Name: Ailurichthys
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ailurichthys
Name: Aipichthys
Order: Salmoniformes
Habitat: Marine (extinct)
Scientific name: Aipichthys
Name: Air-breathing Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Clarias batrachus
Name: Aka Tombo
Order: Perciformes
Habitat: Marine; Benthic
Scientific name: Synodus Tumbil
Name: Akagi's Goby
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Gobiodon Akagii
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Name: Akame (Lates microlepis)
Order: Perciformes
Habitat: Freshwater
Scientific name: Lates microlepis
Name: Akami
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Lethrinus Eboninus
Name: Akebono-haze
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Amblyeleotris Japonica
Name: Aki-haze
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Eviota Enebiota
Name: Akko Goby
Order: Perciformes
Habitat: Marine
Scientific name: Akko
Name: Akysidae
Order: Siluriformes
Habitat: Freshwater
Scientific name: Akysidae
Name: Ala-dorsa Grouper
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Epinephelus Fascoguttatus
Name: Alabama Cavefish
Order: Percopsiformes
Habitat: Freshwater; Caves
Scientific name: Speoplatyrhinus Pondi
Name: Alacran's Cardinalfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Apogon Alacranus
Name: Alaska Blackfish
Order: Esociformes
Habitat: Freshwater
Scientific name: Dallia pectoralis
Name: Alaska Pollack
Order: Gadiformes
Habitat: Marine
Scientific name: Gadus chalcogrammus
Name: Alaska Pollock
Order: Gadiformes
Habitat: Marine
Scientific name: Gadus chalcogrammus
Name: Alaska Sculpin
Order: Scorpaeniformes
Habitat: Coastal waters of the North Pacific
Scientific name: Myoxocephalus brandtii
Name: Alaskan Blackfish
Order: Esociformes
Habitat: Freshwater
Scientific name: Dallia pectoralis
Name: Alaskan Brook Lamprey
Order: Petromyzontiformes
Habitat: Freshwater streams of Alaska
Scientific name: Lethenteron alaskense
Name: Alaskan Dusky Rockfish
Order: Scorpaeniformes
Habitat: Coastal waters of the North Pacific
Scientific name: Sebastes ciliatus
Name: Alaskan Plaice
Order: Pleuronectiformes
Habitat: Marine; Benthic
Scientific name: Pleuronectes Quadrituberculatus
Name: Alatheca
Order: Placodermi
Habitat: Ancient marine environments (extinct)
Scientific name: Alatheca
Name: Alausa Fallax
Order: Clupeiformes
Habitat: Freshwater/Brackish (Europe)
Scientific name: Alausa fallax
Name: Albacore
Order: Scombriformes
Habitat: Marine
Scientific name: Thunnus alalunga
Name: Albacore Tuna
Order: Scombriformes
Habitat: Marine
Scientific name: Thunnus alalunga
Name: Albany Emperor
Order: Lutjaniformes
Habitat: Indo-Pacific coral reefs
Scientific name: Lethrinus miniatus
Name: Albany Snapper
Order: Lutjaniformes
Habitat: Indo-Pacific coral reefs (same as Albany Emperor?)
Scientific name: Lutjanus fulvus
Name: Albert's Killifish
Order: Cyprinodontiformes
Habitat: Freshwater; Rivers
Scientific name: Aphyosemion Albertsi
Name: Albert's Lyretail
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Aphyosemion albertiserpai
Name: Alberta Trout-perch
Order: Percopsiformes
Habitat: Freshwater
Scientific name: Percopsis transmontana
Name: Albi
Order: Cypriniformes
Habitat: Freshwater rivers of Europe
Scientific name: Rutilus alburnoides
Name: Albino Bristlenose Pleco
Order: Siluriformes
Habitat: Amazon Basin (aquarium strain)
Scientific name: Ancistrus sp.
Name: Albula
Order: Albuliformes
Habitat: Tropical and subtropical marine waters
Scientific name: Albula vulpes
Name: Albula Cali
Order: Albuliformes
Habitat: Marine (Pacific)
Scientific name: Albula cali
Name: Albula Glossodonta
Order: Albuliformes
Habitat: Marine (Indo-Pacific)
Scientific name: Albula glossodonta
Name: Albula Nemoptera
Order: Albuliformes
Habitat: Marine (Indo-Pacific)
Scientific name: Albula nemoptera
Name: Albula vulpes
Order: Albuliformes
Habitat: Tropical and subtropical marine waters
Scientific name: Albula vulpes
Name: Albuliformes
Order: Albuliformes
Habitat: Tropical and subtropical marine waters
Scientific name: Albuliformes
Name: Alburnoides
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Alburnoides
Name: Alburnus
Order: Cypriniformes
Habitat: Freshwater/Brackish
Scientific name: Alburnus
Name: Aldebaran Coralfish
Order: Perciformes
Habitat: Marine (Red Sea)
Scientific name: Chaetodon austriacus
Name: Alectis
Order: Carangiformes
Habitat: Tropical and subtropical Indo-Pacific
Scientific name: Alectis indicus
Name: Alepes Melanoptera
Order: Carangiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Alepes melanoptera
Name: Alepisaurus
Order: Aulopiformes
Habitat: Marine
Scientific name: Alepisaurus
Name: Alepocephalidae
Order: Alepocephaliformes
Habitat: Deep sea
Scientific name: Alepocephalus bairdii
Name: Alepocephaliformes
Order: Alepocephaliformes
Habitat: Deep sea
Scientific name: Alepocephaliformes
Name: Alepocephalus
Order: Salmoniformes
Habitat: Marine
Scientific name: Alepocephalus
Name: Aleutiana Sculpin
Order: Scorpaeniformes
Habitat: Marine (Pacific)
Scientific name: Myoxocephalus aleutianus
Name: Alewife
Order: Clupeiformes
Habitat: Marine/Freshwater
Scientific name: Alosa pseudoharengus
Name: Alexandria Sole
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Solea aegyptiaca
Name: Alfonsin
Order: Beryciformes
Habitat: Marine
Scientific name: Beryx mollis
Name: Alfonsino
Order: Beryciformes
Habitat: Marine
Scientific name: Beryx splendens
Name: Algae Blenny
Order: Blenniiformes
Habitat: Indo-Pacific coral reefs
Scientific name: Salarias fasciatus
Name: Algae Cod
Order: Gadiformes
Habitat: Marine
Scientific name: Bregmaceros cantori
Name: Algal Blenny
Order: Perciformes
Habitat: Marine
Scientific name: Parablennius marmoratus
Name: Algertia
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Algertia
Name: Alianna's Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Cirrhilabrus aliannae
Name: Alla Kuru
Order: Cypriniformes
Habitat: Freshwater (India)
Scientific name: Tor tor
Name: Allegheny Brook Lamprey
Order: Petromyzontiformes
Habitat: Freshwater streams of eastern North America
Scientific name: Lampetra aepyptera
Name: Alligator Gar
Order: Lepisosteiformes
Habitat: Freshwater/Brackish
Scientific name: Atractosteus spatula
Name: Alligator Pipefish
Order: Syngnathiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Syngnathoides biaculeatus
Name: Alligatorfish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Agonus acipenserinus
Name: Allis Shad
Order: Clupeiformes
Habitat: Coastal waters and rivers of Europe
Scientific name: Alosa alosa
Name: Allocareproctus
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Allocareproctus
Name: Allocottus
Order: Scorpaeniformes
Habitat: Freshwater
Scientific name: Allocottus
Name: Allodontichthys
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Allodontichthys
Name: Allolepis
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Allolepis
Name: Allomurus
Order: Gadiformes
Habitat: Marine
Scientific name: Allomurus
Name: Allomyrina
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Allomyrina
Name: Allosmerus
Order: Osmeriformes
Habitat: Marine
Scientific name: Allosmerus elongatus
Name: Allothunnus
Order: Perciformes
Habitat: Marine
Scientific name: Allothunnus fallai
Name: Almaco Jack
Order: Carangiformes
Habitat: Marine
Scientific name: Seriola rivoliana
Name: Almas Caviar Sturgeon
Order: Acipenseriformes
Habitat: Freshwater/Brackish (Caspian Sea)
Scientific name: Huso huso
Name: Alopias Superciliosus
Order: Lamniformes
Habitat: Marine (Atlantic)
Scientific name: Alopias superciliosus
Name: Alosa
Order: Clupeiformes
Habitat: Coastal waters and rivers of North America
Scientific name: Alosa sapidissima
Name: Alosa Sapidissima
Order: Clupeiformes
Habitat: Freshwater/Brackish (North America)
Scientific name: Alosa sapidissima
Name: Alosapsetta
Order: Pleuronectiformes
Habitat: Marine (extinct)
Scientific name: Alosapsetta
Name: Alotonus
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Alotonus
Name: Alpena Cisco
Order: Salmoniformes
Habitat: Freshwater (Extinct)
Scientific name: Coregonus alpenae
Name: Alpha Dragonet
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Synchiropus Alpha
Name: Alphes' Grunt
Order: Perciformes
Habitat: Marine; Coastal
Scientific name: Pomadasys Alphes
Name: Alphestes
Order: Perciformes
Habitat: Marine
Scientific name: Alphestes
Name: Alphestes Multiguttatus
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Alphestes Multiguttatus
Name: Alphonse
Order: Beryciformes
Habitat: Marine
Scientific name: Beryx decadactylus
Name: Alpine Bullhead
Order: Scorpaeniformes
Habitat: Freshwater
Scientific name: Cottus poecilopus
Name: Alpine Char
Order: Salmoniformes
Habitat: Cold freshwater lakes and rivers of the Northern Hemisphere
Scientific name: Salvelinus alpinus
Name: Alpine Goby
Order: Gobiiformes
Habitat: Freshwater rivers and lakes of Italy
Scientific name: Padogobius bonelli
Name: Alpine Loach
Order: Cypriniformes
Habitat: Freshwater rivers and lakes of high altitudes in Asia
Scientific name: Triplophysa stoliczkai
Name: Alpine Spined Loach
Order: Cypriniformes
Habitat: Freshwater rivers and lakes of Europe
Scientific name: Cobitis taenia
Name: Alpiniiformes
Order: Alpiniiformes
Habitat: Ancient marine waters (extinct)
Scientific name: Alpiniiformes
Name: Alpiscis
Order: Cypriniformes
Habitat: Freshwater (extinct)
Scientific name: Alpiscis
Name: Alstonia
Order: Gadiformes
Habitat: Marine (extinct)
Scientific name: Alstonia
Name: Alticus Salirens
Order: Perciformes
Habitat: Marine; Rocky Shores
Scientific name: Alticus Salirens
Name: Altolamprologus Calvus
Order: Cichliformes
Habitat: Freshwater (Lake Tanganyika)
Scientific name: Altolamprologus calvus
Name: Altolamprologus Compressiceps
Order: Cichliformes
Habitat: Freshwater (Lake Tanganyika)
Scientific name: Altolamprologus compressiceps
Name: Altum Angelfish
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Pterophyllum Altum
Name: Alutera Scripta
Order: Tetraodontiformes
Habitat: Marine; Tropical
Scientific name: Alutera Scripta
Name: Aluterus
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Aluterus
Name: Alverca Barbel
Order: Cypriniformes
Habitat: Freshwater rivers of Portugal
Scientific name: Luciobarbus bocagei
Name: Amacrodon
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Amacrodon
Name: Amago
Order: Salmoniformes
Habitat: Freshwater (Japan)
Scientific name: Oncorhynchus masou macrostomus
Name: Amami Rabbitfish
Order: Siganiformes
Habitat: Marine
Scientific name: Siganus spinus
Name: Amanses
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Amanses
Name: Amaranth Cichlid
Order: Cichliformes
Habitat: Freshwater rivers of West Africa
Scientific name: Hemichromis guttatus
Name: Amassona Cichlid
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Cichla Amasisona
Name: Amateur Bass
Order: Perciformes
Habitat: Freshwater
Scientific name: Lates mariae
Name: Amathys
Order: Perciformes
Habitat: Marine
Scientific name: Amathys
Name: Amazon Dasylophus
Order: Siluriformes
Habitat: Freshwater
Scientific name: Oxydoras niger
Name: Amazon Dwarf Cichlid
Order: Cichliformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Apistogramma cacatuoides
Name: Amazon Leaf Fish
Order: Perciformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Monocirrhus polyacanthus
Name: Amazon Marbled Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Brochis splendens
Name: Amazon Molly
Order: Cyprinodontiformes
Habitat: Freshwater rivers and lakes of Mexico and Texas
Scientific name: Poecilia formosa
Name: Amazon Puffer
Order: Tetraodontiformes
Habitat: Freshwater
Scientific name: Colomesus asellus
Name: Amazon Ribbontail Catfish
Order: Siluriformes
Habitat: Amazon Basin
Scientific name: Loricaria lata
Name: Amazon Sailfin Catfish
Order: Siluriformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Pterygoplichthys pardalis
Name: Amazon Stingray
Order: Myliobatiformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Potamotrygon motoro
Name: Amazon Swordtail
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Xiphophorus helleri
Name: Amazonian Angelfish
Order: Cichliformes
Habitat: Freshwater
Scientific name: Pterophyllum leopoldi
Name: Amazonian Catfish
Order: Siluriformes
Habitat: Amazon Basin
Scientific name: Phractocephalus hemioliopterus
Name: Ambasia
Order: Perciformes
Habitat: Freshwater
Scientific name: Ambasia
Name: Ambassidae
Order: Perciformes
Habitat: Marine/Brackish/Freshwater
Scientific name: Ambassidae
Name: Amber Dwarf Goby
Order: Gobiiformes
Habitat: Indo-Pacific coral reefs
Scientific name: Trimma anas
Name: Amber Jack
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Seriola Dumerili
Name: Amber Snapper
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Lutjanus fulvus
Name: Amberjack
Order: Carangiformes
Habitat: Marine
Scientific name: Seriola dumerili
Name: Ambloplites
Order: Perciformes
Habitat: Freshwater rivers and lakes of Eastern and Central North America
Scientific name: Ambloplites rupestris
Name: Amblyceps Mangois
Order: Siluriformes
Habitat: Freshwater (Asia)
Scientific name: Amblyceps mangois
Name: Amblycirrhitus
Order: Perciformes
Habitat: Marine
Scientific name: Amblycirrhitus
Name: Amblydoras
Order: Siluriformes
Habitat: Freshwater
Scientific name: Amblydoras
Name: Amblyeleotris
Order: Gobiiformes
Habitat: Indo-Pacific coral reefs
Scientific name: Amblyeleotris guttata
Name: Amblyeleotris Aurora
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amblyeleotris aurora
Name: Amblyeleotris Gecostegus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amblyeleotris gecostegus
Name: Amblyeleotris Sungami
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Amblyeleotris sungami
Name: Amblygaster
Order: Clupeiformes
Habitat: Marine
Scientific name: Amblygaster
Name: Amblygaster Sirm
Order: Clupeiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amblygaster sirm
Name: Amblygobius
Order: Perciformes
Habitat: Marine
Scientific name: Amblygobius
Name: Amblyopinae
Order: Perciformes
Habitat: Marine/Brackish
Scientific name: Amblyopinae
Name: Amblyopsis
Order: Percopsiformes
Habitat: Subterranean freshwaters of North America
Scientific name: Amblyopsis spelaea
Name: Amblyraja
Order: Rajiformes
Habitat: Marine
Scientific name: Amblyraja
Name: Amblyrhynchotes
Order: Tetraodontiformes
Habitat: Indo-Pacific (pufferfish)
Scientific name: Amblyrhynchotes honckenii
Name: Ambon Damselfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Pomacentrus Amboinensis
Name: Ambon Goby
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Amblygobius Ambon
Name: Ambon Scorpionfish
Order: Scorpaeniformes
Habitat: Marine; Coral Reefs
Scientific name: Pterois Ambon
Name: Ambon Shark
Order: Carcharhiniformes
Habitat: Marine; Coastal
Scientific name: Carcharhinus Amboinensis
Name: Ambrosia Fish
Order: Perciformes
Habitat: Marine
Scientific name: Ambrosia thompsoni
Name: Ambush Bugfish
Order: Scorpaeniformes
Habitat: Marine; Benthic
Scientific name: Paracentropogon Vespoides
Name: Ambystoma mexicanum
Order: Urodela
Habitat: Freshwater
Scientific name: Ambystoma mexicanum
Name: Ameca splendens
Order: Cyprinodontiformes
Habitat: Freshwater (Mexico)
Scientific name: Ameca splendens
Name: Ameiurus
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ameiurus
Name: American Angler
Order: Lophiiformes
Habitat: Marine; Benthic
Scientific name: Lophius Americanus
Name: American Backfin
Order: Perciformes
Habitat: Marine (Atlantic)
Scientific name: Pristigenys alta
Name: American Bonito
Order: Scombriformes
Habitat: Marine; Pelagic
Scientific name: Sarda Sarda
Name: American Brook Lamprey
Order: Petromyzontiformes
Habitat: Freshwater
Scientific name: Lethenteron appendix
Name: American Butterfish
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Peprilus Triacanthus
Name: American Conger Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Conger oceanicus
Name: American Eel
Order: Anguilliformes
Habitat: Freshwater/Brackish/Marine
Scientific name: Anguilla rostrata
Name: American Flagfish
Order: Cyprinodontiformes
Habitat: Freshwater (North America)
Scientific name: Jordanella floridae
Name: American Goodea
Order: Cyprinodontiformes
Habitat: Freshwater (Mexico)
Scientific name: Goodea atripinnis
Name: American Goosefish
Order: Lophiiformes
Habitat: Marine
Scientific name: Lophius americanus
Name: American Grouper
Order: Perciformes
Habitat: Marine
Scientific name: Mycteroperca microlepis
Name: American Hairtail
Order: Perciformes
Habitat: Marine; Estuarine
Scientific name: Trichiurus Lepturus
Name: American Hake
Order: Gadiformes
Habitat: Marine
Scientific name: Urophycis chuss
Name: American Halfbeak
Order: Beloniformes
Habitat: Marine
Scientific name: Hyporhamphus unifasciatus
Name: American Halibut
Order: Pleuronectiformes
Habitat: Marine; Benthic
Scientific name: Hippoglossus Hippoglossus
Name: American John Dory
Order: Zeiformes
Habitat: Marine
Scientific name: Zenopsis conger
Name: American Paddlefish
Order: Acipenseriformes
Habitat: Freshwater
Scientific name: Polyodon spathula
Name: American Plaice
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Hippoglossoides platessoides
Name: American Pomfret
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Brama Brama
Name: American Red Snapper
Order: Perciformes
Habitat: Marine; Benthic
Scientific name: Lutjanus Campechanus
Name: American Sardine
Order: Clupeiformes
Habitat: Marine (Atlantic)
Scientific name: Sardinella aurita
Name: American Shad
Order: Clupeiformes
Habitat: Marine/Freshwater
Scientific name: Alosa sapidissima
Name: American Silver Hake
Order: Gadiformes
Habitat: Marine; Deepwater
Scientific name: Merluccius Bilinearis
Name: American Sole
Order: Pleuronectiformes
Habitat: Marine; Brackish; Benthic
Scientific name: Achirus Lineatus
Name: American Spineless Dogfish
Order: Squaliformes
Habitat: Marine; Deepwater
Scientific name: Centroscyllium Fabricii
Name: American Star Gazer
Order: Perciformes
Habitat: Marine; Benthic
Scientific name: Astroscopus Guttatus
Name: American Toadfish
Order: Batrachoidiformes
Habitat: Marine; Estuarine
Scientific name: Opsanus Tau
Name: Amia
Order: Amiiformes
Habitat: Freshwater rivers and lakes of Eastern North America
Scientific name: Amia calva
Name: Amia Calva
Order: Amiiformes
Habitat: Freshwater (North America)
Scientific name: Amia calva
Name: Amia calva
Order: Amiiformes
Habitat: Freshwater rivers and lakes of Eastern North America
Scientific name: Amia calva
Name: Amiidae
Order: Amiiformes
Habitat: Freshwater (North America)
Scientific name: Amiidae
Name: Amiiformes
Order: Amiiformes
Habitat: Freshwater rivers and lakes of Eastern North America
Scientific name: Amiiformes
Name: Amiloa
Order: Acanthodii
Habitat: Ancient marine environments (extinct)
Scientific name: Amiloa
Name: Amiopsis
Order: Amiiformes
Habitat: Fossil (Freshwater)
Scientific name: Amiopsis
Name: Ammodytes
Order: Gobiiformes
Habitat: Temperate marine waters
Scientific name: Ammodytes hexapterus
Name: Amniataba
Order: Perciformes
Habitat: Freshwater
Scientific name: Amniataba
Name: Amphiacanthus
Order: Perciformes
Habitat: Marine (extinct)
Scientific name: Amphiacanthus
Name: Amphichthys
Order: Batrachoidiformes
Habitat: Marine
Scientific name: Amphichthys
Name: Amphilius
Order: Siluriformes
Habitat: Freshwater streams of West Africa
Scientific name: Amphilius atesuensis
Name: Amphilius Cryptobullatus
Order: Siluriformes
Habitat: Freshwater (Africa)
Scientific name: Amphilius cryptobullatus
Name: Amphilophus
Order: Perciformes
Habitat: Freshwater
Scientific name: Amphilophus
Name: Amphilophus Labiatus
Order: Cichliformes
Habitat: Freshwater (Central America)
Scientific name: Parachromis labiatus
Name: Amphioxus
Order: Amphioxiformes
Habitat: Marine; Sandy Substrates
Scientific name: Branchiostoma Lanceolatum
Name: Amphipnous
Order: Synbranchiformes
Habitat: Freshwater swamps and rice paddies of South Asia
Scientific name: Amphipnous cuchia
Name: Amphiprion
Order: Perciformes
Habitat: Indo-Pacific coral reefs (Clownfish)
Scientific name: Amphiprion ocellaris
Name: Amphiprion Akallopisos
Order: Perciformes
Habitat: Marine (Indian Ocean)
Scientific name: Amphiprion akallopisos
Name: Amphiprion Bicinctus
Order: Perciformes
Habitat: Marine (Red Sea)
Scientific name: Amphiprion bicinctus
Name: Amphiprion Clarkii
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amphiprion clarkii
Name: Amphiprion Ephippium
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amphiprion ephippium
Name: Amphiprion Frenatus
Order: Perciformes
Habitat: Marine (Pacific)
Scientific name: Amphiprion frenatus
Name: Amphiprion Latezonatus
Order: Perciformes
Habitat: Marine (Australia)
Scientific name: Amphiprion latezonatus
Name: Amphiprion Percula
Order: Perciformes
Habitat: Marine (Western Pacific)
Scientific name: Amphiprion percula
Name: Amphiprion Perideraion
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amphiprion perideraion
Name: Amphiprion Polymnus
Order: Perciformes
Habitat: Marine (Western Pacific)
Scientific name: Amphiprion polymnus
Name: Amphiprion Sandaracinos
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Amphiprion sandaracinos
Name: Amphiprion clarkii
Order: Perciformes
Habitat: Indo-Pacific coral reefs (Clark's Anemonefish)
Scientific name: Amphiprion clarkii
Name: Amphiprion frenatus
Order: Perciformes
Habitat: Western Pacific coral reefs (Tomato Clownfish)
Scientific name: Amphiprion frenatus
Name: Amphiprion percula
Order: Perciformes
Habitat: Western Pacific coral reefs (Percula Clownfish)
Scientific name: Amphiprion percula
Name: Amphiprioninae
Order: Perciformes
Habitat: Marine (Subfamily of Clownfish)
Scientific name: Amphiprioninae
Name: Amphipterus
Order: Perciformes
Habitat: Fossil
Scientific name: Amphipterus
Name: Amphipterygium
Order: Anguilliformes
Habitat: Ancient marine environments (extinct)
Scientific name: Amphipterygium
Name: Amphistichus
Order: Perciformes
Habitat: Marine
Scientific name: Amphistichus
Name: Amphistium
Order: Paracanthopterygii
Habitat: Ancient marine environments (extinct)
Scientific name: Amphistium
Name: Amur Carp
Order: Cypriniformes
Habitat: Freshwater (Asia)
Scientific name: Cyprinus carpio haematopterus
Name: Amur Pike
Order: Esociformes
Habitat: Freshwater
Scientific name: Esox reichertii
Name: Amur Sturgeon
Order: Acipenseriformes
Habitat: Freshwater/Brackish
Scientific name: Acipenser schrenckii
Name: Anabas
Order: Anabantiformes
Habitat: Freshwater ponds and swamps of Asia
Scientific name: Anabas testudineus
Name: Anabas Testudineus
Order: Anabantiformes
Habitat: Freshwater/Brackish (Asia)
Scientific name: Anabas testudineus
Name: Anabas cobojius
Order: Anabantiformes
Habitat: Freshwater ponds and swamps of Asia
Scientific name: Anabas cobojius
Name: Anabas testudineus
Order: Anabantiformes
Habitat: Freshwater ponds and swamps of Asia
Scientific name: Anabas testudineus
Name: Anablepidae
Order: Cyprinodontiformes
Habitat: Brackish and marine waters of Central and South America
Scientific name: Anableps anableps
Name: Anableps
Order: Cyprinodontiformes
Habitat: Freshwater/Brackish
Scientific name: Anableps anableps
Name: Anableps anableps
Order: Cyprinodontiformes
Habitat: Brackish and marine waters of Central and South America
Scientific name: Anableps anableps
Name: Anableps dowei
Order: Cyprinodontiformes
Habitat: Brackish and marine waters of Central America
Scientific name: Anableps dowei
Name: Anableps microlepis
Order: Cyprinodontiformes
Habitat: Brackish and marine waters of Central and South America
Scientific name: Anableps microlepis
Name: Anacanthini
Order: Gadiformes
Habitat: Marine
Scientific name: Anacanthini
Name: Anacanthobatis
Order: Rajiformes
Habitat: Atlantic Ocean (skate)
Scientific name: Anacanthobatis stenosoma
Name: Anacanthobatis longirostris
Order: Rajiformes
Habitat: Atlantic Ocean (skate)
Scientific name: Anacanthobatis longirostris
Name: Anacanthobatis stenosoma
Order: Rajiformes
Habitat: Atlantic Ocean (skate)
Scientific name: Anacanthobatis stenosoma
Name: Anacanthus
Order: Tetraodontiformes
Habitat: Indo-Pacific (filefish)
Scientific name: Anacanthus barbatus
Name: Anacanthus barbatus
Order: Tetraodontiformes
Habitat: Indo-Pacific (filefish)
Scientific name: Anacanthus barbatus
Name: Anacypris
Order: Cypriniformes
Habitat: Freshwater rivers of Turkey
Scientific name: Anacypris merus
Name: Anacypris merus
Order: Cypriniformes
Habitat: Freshwater rivers of Turkey
Scientific name: Anacypris merus
Name: Anadolu Barb
Order: Cypriniformes
Habitat: Freshwater; Rivers
Scientific name: Barbus Anadoluensis
Name: Anaecypris
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Anaecypris
Name: Anago
Order: Anguilliformes
Habitat: Marine
Scientific name: Conger myriaster
Name: Anambra Barb
Order: Cypriniformes
Habitat: Freshwater (Nigeria)
Scientific name: Barbus anambraensis
Name: Anampses
Order: Labriformes
Habitat: Indo-Pacific coral reefs (Wrasse)
Scientific name: Anampses twistii
Name: Anampses Caudalineatus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Anampses caudalineatus
Name: Anampses Lyratus
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Anampses lyratus
Name: Anampses Meleagrides
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Anampses meleagrides
Name: Anampses Twistii
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Anampses twistii
Name: Anampses geographicus
Order: Labriformes
Habitat: Indo-Pacific coral reefs (Wrasse)
Scientific name: Anampses geographicus
Name: Anampses neoguinaicus
Order: Labriformes
Habitat: Western Pacific coral reefs (Wrasse)
Scientific name: Anampses neoguinaicus
Name: Anampses twistii
Order: Labriformes
Habitat: Indo-Pacific coral reefs (Wrasse)
Scientific name: Anampses twistii
Name: Ananta's Catfish
Order: Siluriformes
Habitat: Freshwater; Rivers
Scientific name: Mystus Ananta
Name: Anarchy Batfish
Order: Ephippiformes
Habitat: Marine
Scientific name: Platypus guinaicus
Name: Anarhichadidae
Order: Perciformes
Habitat: North Atlantic and Pacific (Wolffishes)
Scientific name: Anarhichadidae
Name: Anarhichas
Order: Perciformes
Habitat: North Atlantic and Pacific (Wolffishes)
Scientific name: Anarhichas lupus
Name: Anarhichas denticulatus
Order: Perciformes
Habitat: North Atlantic (Northern Wolffish)
Scientific name: Anarhichas denticulatus
Name: Anarhichas lupus
Order: Perciformes
Habitat: North Atlantic and Pacific (Atlantic Wolffish)
Scientific name: Anarhichas lupus
Name: Anarhichas minor
Order: Perciformes
Habitat: North Atlantic (Spotted Wolffish)
Scientific name: Anarhichas minor
Name: Anarhichas orientalis
Order: Perciformes
Habitat: North Pacific (Bering Wolffish)
Scientific name: Anarhichas orientalis
Name: Anchialine Cave Goby
Order: Gobiiformes
Habitat: Marine (Caves)
Scientific name: Akko nomurai
Name: Anchoa
Order: Clupeiformes
Habitat: Marine
Scientific name: Anchoa
Name: Anchoa Hepsetus
Order: Clupeiformes
Habitat: Marine (Atlantic)
Scientific name: Anchoa hepsetus
Name: Anchoa Mitchilli
Order: Clupeiformes
Habitat: Marine (Atlantic)
Scientific name: Anchoa mitchilli
Name: Anchoveta
Order: Clupeiformes
Habitat: Marine (Pacific)
Scientific name: Engraulis ringens
Name: Anchovy
Order: Clupeiformes
Habitat: Marine
Scientific name: Engraulidae
Name: Anchovy Herring
Order: Clupeiformes
Habitat: Marine; Pelagic
Scientific name: Clupea Harengus Membras
Name: Anchovy Pearly
Order: Perciformes
Habitat: Marine; Commensal
Scientific name: Encheliophis Hottentota
Name: Ancistrus
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ancistrus
Name: Ancylopsetta
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Ancylopsetta
Name: Andaman Batfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Platax Teira
Name: Andaman Demoiselle
Order: Perciformes
Habitat: Marine (Andaman Sea)
Scientific name: Neoglyphidodon melas
Name: Andaman Moray
Order: Anguilliformes
Habitat: Marine; Coral Reefs
Scientific name: Gymnothorax Andamanicus
Name: Andaman Whiptail
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Pentapodus Andamanensis
Name: Andamia
Order: Perciformes
Habitat: Marine
Scientific name: Andamia
Name: Andamia Heteroptera
Order: Perciformes
Habitat: Marine (Indo-Pacific)
Scientific name: Andamia heteroptera
Name: Andean Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Trichomycterus rivulatus
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Name: Andean Catfish (Trichomycteridae)
Order: Siluriformes
Habitat: Freshwater (Andes)
Scientific name: Trichomycteridae
Name: Andean Killifish
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Orestias luteus
Name: Anderson's Catshark
Order: Carcharhiniformes
Habitat: Marine; Deepwater
Scientific name: Pristiurus Andersoni
Name: Andersonia
Order: Siluriformes
Habitat: Freshwater
Scientific name: Andersonia
Name: Andes Killifish
Order: Cyprinodontiformes
Habitat: Freshwater (Andes)
Scientific name: Orestias luteus
Name: Andinoacara Rivulatus
Order: Cichliformes
Habitat: Freshwater (South America)
Scientific name: Andinoacara rivulatus
Name: Andrew's Cardinalfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Apogon Andrewsii
Name: Andrias Davidianus
Order: Urodela
Habitat: Freshwater (Asia)
Scientific name: Andrias davidianus
Name: Andrias japonicus
Order: Urodela
Habitat: Freshwater (Japan)
Scientific name: Andrias japonicus
Name: Anemonefish
Order: Perciformes
Habitat: Marine
Scientific name: Amphiprioninae
Name: Angel Shark
Order: Squatiniformes
Habitat: Marine (Atlantic)
Scientific name: Squatina squatina
Name: Angelfish
Order: Cichliformes
Habitat: Freshwater
Scientific name: Pterophyllum scalare
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Name: Angelfish (Freshwater)
Order: Cichliformes
Habitat: Freshwater (Amazon Basin)
Scientific name: Pterophyllum scalare
Name: Angelfish (freshwater)
Order: Perciformes
Habitat: Freshwater
Scientific name: Pterophyllum
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Name: Angelfish (marine)
Order: Perciformes
Habitat: Marine
Scientific name: Pomacanthidae (various genera)
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Name: Anglefish (Marine)
Order: Perciformes
Habitat: Marine
Scientific name: Pomacanthidae
Name: Angler Catfish
Order: Siluriformes
Habitat: Freshwater (Asia)
Scientific name: Chaca chaca
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Name: Angler Fish (Deep Sea)
Order: Lophiiformes
Habitat: Deep Sea
Scientific name: Ceratiidae
Name: Angler Sea Devil
Order: Lophiiformes
Habitat: Marine
Scientific name: Ceratias holboelli
Name: Anglerfish
Order: Lophiiformes
Habitat: Marine
Scientific name: Lophiidae
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Name: Anglerfish (Ceratias)
Order: Anglerfish
Habitat: Marine (Deep Sea)
Scientific name: Ceratias
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Name: Anglerfish (Lophius)
Order: Lophiiformes
Habitat: Marine
Scientific name: Lophius
Name: Angolan Barb
Order: Cypriniformes
Habitat: Freshwater (Angola)
Scientific name: Barbus holotaenia
Name: Anguilla
Order: Anguilliformes
Habitat: Freshwater/Brackish/Marine
Scientific name: Anguilla
Name: Anguilla anguilla
Order: Anguilliformes
Habitat: Freshwater/Marine (Europe)
Scientific name: Anguilla anguilla
Name: Anguilla japonica
Order: Anguilliformes
Habitat: Freshwater/Marine (East Asia)
Scientific name: Anguilla japonica
Name: Anguilliformes
Order: Anguilliformes
Habitat: Marine/Freshwater (Order of Eels)
Scientific name: Anguilliformes
Name: Angular Rough Shark
Order: Squaliformes
Habitat: Marine (Atlantic)
Scientific name: Oxynotus centrina
Name: Angular Roughshark
Order: Squaliformes
Habitat: Marine; Deepwater
Scientific name: Oxynotus Centrina
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Name: Angulas (Baby Eel)
Order: Anguilliformes
Habitat: Freshwater/Brackish
Scientific name: Anguilla anguilla (juvenile)
Name: Anisochromis
Order: Perciformes
Habitat: Marine
Scientific name: Anisochromis
Name: Anisotremus
Order: Perciformes
Habitat: Marine
Scientific name: Anisotremus
Name: Anisotremus Virginicus
Order: Perciformes
Habitat: Marine (Atlantic)
Scientific name: Anisotremus virginicus
Name: Anomalops
Order: Beryciformes
Habitat: Marine
Scientific name: Anomalops katoptron
Name: Anomalops Katoptron
Order: Beryciformes
Habitat: Marine (Pacific)
Scientific name: Anomalops katoptron
Name: Anomalopterus
Order: Anomalopteriformes
Habitat: Fossil
Scientific name: Anomalopterus
Name: Anomalopterus Fasciculatus
Order: Perciformes
Habitat: Marine; Deepwater
Scientific name: Anomalopterus Fasciculatus
Name: Anoplagonus Inermis
Order: Scorpaeniformes
Habitat: Marine; Deepwater
Scientific name: Anoplagonus Inermis
Name: Anoplogaster
Order: Stephanoberyciformes
Habitat: Marine
Scientific name: Anoplogaster
Name: Anoplogaster Cornuta
Order: Stomiiformes
Habitat: Marine (Deep Sea)
Scientific name: Anoplogaster cornuta
Name: Anoplopoma Fimbria
Order: Scorpaeniformes
Habitat: Marine; Deepwater
Scientific name: Anoplopoma Fimbria
Name: Anoptichthys
Order: Characiformes
Habitat: Freshwater (Cavefish)
Scientific name: Anoptichthys jordani
Name: Anostomidae
Order: Characiformes
Habitat: Freshwater
Scientific name: Anostomidae
Name: Anostomus
Order: Characiformes
Habitat: Freshwater
Scientific name: Anostomus
Name: Anostomus Anostomus
Order: Characiformes
Habitat: Freshwater (South America)
Scientific name: Anostomus anostomus
Name: Antarctic Cod
Order: Nototheniiformes
Habitat: Marine; Pelagic
Scientific name: Dissostichus Mawsoni
Name: Antarctic Dragonfish
Order: Perciformes
Habitat: Marine; Deep Seaa
Scientific name: Parachaenichthys Charcoti
Name: Antarctic Icefish
Order: Nototheniiformes
Habitat: Marine; Deep Sea
Scientific name: Chionodraco Hamatus
Name: Antarctic Lanternfish
Order: Myctophiformes
Habitat: Marine; Deep Sea
Scientific name: Gymnoscopelus Nichol
Name: Antarctic Silverfish
Order: Notothenioidei
Habitat: Marine (Antarctic)
Scientific name: Pleuragramma antarctica
Name: Antarctic Toothfish
Order: Perciformes
Habitat: Marine
Scientific name: Dissostichus mawsoni
Name: Antarctica Sunfish
Order: Tetraodontiformes
Habitat: Marine; Pelagic
Scientific name: Mola Mola
Name: Antenna Ray
Order: Myliobatiformes
Habitat: Marine (Atlantic)
Scientific name: Dasyatis pastinaca
Name: Antennablennius
Order: Perciformes
Habitat: Marine
Scientific name: Antennablennius
Name: Antennarius
Order: Lophiiformes
Habitat: Marine
Scientific name: Antennarius
Name: Antennarius Commerson
Order: Lophiiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Antennarius commerson
Name: Antennarius Maculatus
Order: Lophiiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Antennarius maculatus
Name: Antennarius Pictus
Order: Lophiiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Antennarius pictus
Name: Antennarius Striatus
Order: Lophiiformes
Habitat: Marine (Indo-Pacific)
Scientific name: Antennarius striatus
Name: Antennata
Order: Lophiiformes
Habitat: Marine (extinct)
Scientific name: Antennata
Name: Antherinops
Order: Atheriniformes
Habitat: Marine
Scientific name: Antherinops
Name: Anthias
Order: Perciformes
Habitat: Marine
Scientific name: Anthias
Name: Anticora's Damselfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Chromis Anticora
Name: Antigonia Aurorosea
Order: Perciformes
Habitat: Marine
Scientific name: Antigonia aurorosea
Name: Antigonia Capros
Order: Perciformes
Habitat: Marine
Scientific name: Antigonia capros
Name: Antigonia Raja
Order: Perciformes
Habitat: Marine
Scientific name: Antigonia raja
Name: Antilles Goatee
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Pseudupeneus Maculatus
Name: Antilles Grouper
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Mycteroperca Venenosa
Name: Antilocha
Order: Siluriformes
Habitat: Freshwater
Scientific name: Antilophus macrophthalmus
Name: Antimora Rostrata
Order: Gadiformes
Habitat: Marine (Deep Sea)
Scientific name: Antimora rostrata
Name: Antipodean Sawshark
Order: Pristiophoriformes
Habitat: Marine
Scientific name: Pristiophorus nudipinnis
Name: Antipodean Slopefish
Order: Argentiniformes
Habitat: Marine; Deepwater
Scientific name: Nansenia Antipoda
Name: Antipodocottus
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Antipodocottus
Name: Antropicum
Order: Cypriniformes
Habitat: Freshwater (extinct)
Scientific name: Antropicum
Name: Anyperodon
Order: Perciformes
Habitat: Marine
Scientific name: Anyperodon leucogrammicus
Name: Aonaga-ginpo
Order: Perciformes
Habitat: Marine; Sandy Bottom
Scientific name: Pteropsaron Incisum
Name: Aonori-iso-haze
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Gobiodon Reticulatus
Name: Apache Killifish
Order: Cyprinodontiformes
Habitat: Freshwater; Springs
Scientific name: Cyprinodon Apaches
Name: Aparodus
Order: Aparodiformes
Habitat: Fossil
Scientific name: Aparodus
Name: Aphanius Dispar
Order: Cyprinodontiformes
Habitat: Freshwater/Brackish (Middle East)
Scientific name: Aphanius dispar
Name: Aphanius Iberus
Order: Cyprinodontiformes
Habitat: Freshwater/Brackish (Mediterranean)
Scientific name: Aphanius iberus
Name: Apistogramma Agassizii
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Apistogramma Agassizii
Name: Apistogramma Agassizii Fire Red
Order: Cichliformes
Habitat: Freshwater (South America – Cultivar)
Scientific name: Apistogramma agassizii
Name: Apistogramma Borellii
Order: Cichliformes
Habitat: Freshwater (South America)
Scientific name: Apistogramma borellii
Name: Apistogramma Cacatuoides
Order: Cichliformes
Habitat: Freshwater (South America)
Scientific name: Apistogramma cacatuoides
Name: Apistogramma trifasciata
Order: Cichliformes
Habitat: Freshwater (South America)
Scientific name: Apistogramma trifasciata
Name: Apistogramma viejita
Order: Cichliformes
Habitat: Freshwater (South America)
Scientific name: Apistogramma viejita
Name: Aplocheilichthys Orlando
Order: Cyprinodontiformes
Habitat: Freshwater (Africa)
Scientific name: Aplocheilichthys orlando
Name: Aplocheilus Lineatus
Order: Cyprinodontiformes
Habitat: Freshwater (Asia)
Scientific name: Aplocheilus lineatus
Name: Aplocheilus Panakkar
Order: Cyprinodontiformes
Habitat: Freshwater (Asia)
Scientific name: Aplocheilus panakkar
Name: Aplodactylus Arctidens
Order: Perciformes
Habitat: Marine (Australia)
Scientific name: Aplodactylus arctidens
Name: Aplodactylus Etheridgii
Order: Perciformes
Habitat: Marine (Australia)
Scientific name: Aplodactylus etheridgii
Name: Aplodactylus Fissidens
Order: Perciformes
Habitat: Marine (Australia)
Scientific name: Aplodactylus fissidens
Name: Aplodactylus Obscurus
Order: Perciformes
Habitat: Marine (Australia)
Scientific name: Aplodactylus obscurus
Name: Apogon Nigripinnis
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Apogon Nigripinnis
Name: Apogon Semiornatus
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Apogon Semiornatus
Name: Apristurus
Order: Carcharhiniformes
Habitat: Marine (Deep Sea Sharks)
Scientific name: Apristurus
Name: Arabian Angelfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Pomacanthus Asfur
Name: Arabian Blue Tang
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Acanthurus Sohal
Name: Arabian Bluegill
Order: Perciformes
Habitat: Marine
Scientific name: Cynoscion regalis
Name: Arabian Chromis
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Chromis Cinerascens
Name: Arabian Dottyback
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Pseudochromis Dianneae
Name: Arabian Hamlet
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Hypoplectrus Floridaris
Name: Arabian Leopard Ray
Order: Rajiformes
Habitat: Marine; Coastal
Scientific name: Pastinachus Sephen
Name: Arabian Mojarra
Order: Perciformes
Habitat: Marine; Estuarine
Scientific name: Gerres Oryzae
Name: Arabian Picasso Triggerfish
Order: Tetraodontiformes
Habitat: Marine; Coral Reefs
Scientific name: Rhinecanthus Assasi
Name: Arabian Picassofish
Order: Tetraodontiformes
Habitat: Marine; Coral Reefs
Scientific name: Rhinecanthus Assasi
Name: Arabian Rainbowfish
Order: Atheriniformes
Habitat: Freshwater; Streams
Scientific name: Melanotaenia Praecox
Name: Arabian Sea Catshark
Order: Carcharhiniformes
Habitat: Marine; Deepwater
Scientific name: Apristurus Longicephalus
Name: Arabian Shark
Order: Carcharhiniformes
Habitat: Marine; Coastal
Scientific name: Carcharhinus Obesus
Name: Arabian Surgeonfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Acanthurus Sohal
Name: Arabian Toadfish
Order: Batrachoidiformes
Habitat: Marine; Benthic
Scientific name: Halobatrachus Didactylus
Name: Arabian Whipray
Order: Myliobatiformes
Habitat: Marine; Coastal
Scientific name: Himantura Uarnak
Name: Arafura Filefish
Order: Tetraodontiformes
Habitat: Marine; Coastal
Scientific name: Aracana Aurita
Name: Arafura Shovelnose Ray
Order: Rajiformes
Habitat: Marine; Benthic
Scientific name: Rhina Anclystoma
Name: Arapaima
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Arapaima gigas
Name: Arc-eye Hawkfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Paracirrhites Arcatus
Name: Archerfish
Order: Perciformes
Habitat: Brackish/Freshwater
Scientific name: Toxotes jaculatrix
Name: Arctic Char
Order: Salmoniformes
Habitat: Freshwater/Marine
Scientific name: Salvelinus alpinus
Name: Arctic Cod
Order: Gadiformes
Habitat: Marine (Arctic)
Scientific name: Boreogadus saida
Name: Arctic Flounder
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Pleuronectes glacialis
Name: Arctic Grayling
Order: Salmoniformes
Habitat: Freshwater
Scientific name: Thymallus arcticus
Name: Arctic Lamprey
Order: Petromyzontiformes
Habitat: Freshwater/Marine
Scientific name: Lethenteron camtschaticum
Name: Arctic Sculpin
Order: Scorpaeniformes
Habitat: Marine; Benthic
Scientific name: Myoxocephalus Scolopax
Name: Arctic Skate
Order: Rajiformes
Habitat: Marine
Scientific name: Amblyraja hyperborea
Name: Arctic Staghorn Sculpin
Order: Cottiformes
Habitat: Marine
Scientific name: Gymnocanthus tricuspis
Name: Arctozenus Rissoi
Order: Osmeriformes
Habitat: Marine; Deepwater
Scientific name: Arctozenus Rissoi
Name: Arenaria Goby
Order: Perciformes
Habitat: Marine; Estuarine
Scientific name: Acanthogobius Flavimanus
Name: Argentine Hake
Order: Gadiformes
Habitat: Marine; Deepwater
Scientific name: Merluccius Hubbsi
Name: Argentine Pearlfish
Order: Ophidiiformes
Habitat: Marine; Commensal
Scientific name: Carapus bermudensis
Name: Argus Butterflyfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Chaetodon Speculum
Name: Argus Grouper
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Cephalopholis Argus
Name: Ariid Catfish
Order: Siluriformes
Habitat: Marine/Brackish (Catfish Family)
Scientific name: Ariidae
Name: Arizona Killifish
Order: Cyprinodontiformes
Habitat: Freshwater (Arizona)
Scientific name: Poeciliopsis occidentalis
Name: Arkansas Shiner
Order: Cypriniformes
Habitat: Freshwater (Arkansas)
Scientific name: Notropis girardi
Name: Armadillo Lizardfish
Order: Aulopiformes
Habitat: Marine; Benthic
Scientific name: Synodus Lucanus
Name: Armored Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Loricariidae
Name: Armored Gurnard
Order: Perciformes
Habitat: Marine
Scientific name: Dactylopteridae
Name: Armored Scad
Order: Carangiformes
Habitat: Marine
Scientific name: Microcanthus strigatus
Name: Armored Searobin
Order: Perciformes
Habitat: Marine
Scientific name: Peristedion
Name: Armoured Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Loricariidae
Name: Arnoul's Silverside
Order: Atheriniformes
Habitat: Marine; Coastal
Scientific name: Atherinomorus Lacunosus
Name: Arowana
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Osteoglossidae
Name: Arrow Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Clevelandia ios
Name: Arrowfish
Order: Perciformes
Habitat: Marine
Scientific name: Parasudis truculenta
Name: Arrowhead Goby
Order: Gobiiformes
Habitat: Marine (Pacific Coast North America)
Scientific name: Clevelandia ios
Name: Arrowhead Sculpin
Order: Cottiformes
Habitat: Marine
Scientific name: Artedius notospilotus
Name: Arrowtooth Flounder
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Atheresthes stomias
Name: Artemia Shrimp
Order: Anostraca
Habitat: Brackish; Saline Lakes
Scientific name: Artemia Salina
Name: Articulating Lizardfish
Order: Aulopiformes
Habitat: Marine; Benthic
Scientific name: Synodus Articulatus
Name: Asagi Butterflyfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Chaetodon Asfur
Name: Ascanius' Goby
Order: Perciformes
Habitat: Marine; Estuarine
Scientific name: Gobius Cobitis
Name: Ascension Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax ascensionis
Name: Ash-colored Sea Catfish
Order: Siluriformes
Habitat: Marine; Estuarine
Scientific name: Arius Thoracata
Name: Ashy Sculpin
Order: Scorpaeniformes
Habitat: Freshwater
Scientific name: Cottus asperrimus
Name: Asian Arowana
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Scleropages formosus
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Name: Asian Catfish (Silurus)
Order: Siluriformes
Habitat: Freshwater (Asia)
Scientific name: Silurus asotus
Name: Asian Climber
Order: Anabantiformes
Habitat: Freshwater (Asia)
Scientific name: Anabas testudineus
Name: Asian Confused Loach
Order: Cypriniformes
Habitat: Freshwater (Asia)
Scientific name: Sinibotia robusta
Name: Asian Datnoid
Order: Perciformes
Habitat: Freshwater/Brackish (Asia)
Scientific name: Datnioides microlepis
Name: Asian Green Catfish
Order: Siluriformes
Habitat: Freshwater (Asia)
Scientific name: Pachypterus
Name: Asian Pike
Order: Esociformes
Habitat: Freshwater (Asia)
Scientific name: Esox lucius
Name: Asian Redtail Catfish
Order: Siluriformes
Habitat: Freshwater; Rivers
Scientific name: Phractocephalus Hemioliopterus
Name: Asian Rummy Nose
Order: Characiformes
Habitat: Freshwater (Asia)
Scientific name: Sawbwa resplendens
Name: Asian Sheatfish
Order: Siluriformes
Habitat: Freshwater (Asia)
Scientific name: Walaya attu
Name: Asian Spiny Eel
Order: Synbranchiformes
Habitat: Freshwater (Asia)
Scientific name: Macrognathus
Name: Asian Threadfin
Order: Polynemiformes
Habitat: Marine; Coastal
Scientific name: Polydactylus Sexfilis
Name: Asian Wolf Eel
Order: Zoarciformes
Habitat: Marine; Deepwater
Scientific name: Lycichthys Denticulatus
Name: Asiatic Glassfish
Order: Perciformes
Habitat: Freshwater/Brackish (Asia)
Scientific name: Parambassis ranga
Name: Asiatic Knifefish
Order: Notopteriformes
Habitat: Freshwater (Asia)
Scientific name: Notopterus notopterus
Name: Asiopsaridae
Order: Perciformes
Habitat: Marine; Deepwater
Scientific name: Asiopsaridae
Name: Asp
Order: Cypriniformes
Habitat: Freshwater (Europe/Asia)
Scientific name: Aspius aspius
Name: Aspidoparia Morar
Order: Cypriniformes
Habitat: Freshwater; Rivers
Scientific name: Aspidoparia Morar
Name: Assasin Pike
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Crenicichla Acutirostris
Name: Assassinfish
Order: Perciformes
Habitat: Marine
Scientific name: Cynoscion spp.
Name: Assessor
Order: Perciformes
Habitat: Marine (Australia)
Scientific name: Assessor macneilli
Name: Asterropteryx Semipunctata
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Asterropteryx Semipunctata
Name: Astyanax Fasciatus
Order: Characiformes
Habitat: Freshwater; Rivers
Scientific name: Astyanax Fasciatus
Name: Asymmetric Jawfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Opistognathus Anaglyptus
Name: Athena's Killifish
Order: Cyprinodontiformes
Habitat: Freshwater; Temporary Pools
Scientific name: Nothobranchius Athana
Name: Atherinella
Order: Atheriniformes
Habitat: Marine/Brackish/Freshwater (Americas)
Scientific name: Atherinella
Name: Atka Mackerel
Order: Scorpaeniformes
Habitat: Marine (North Pacific)
Scientific name: Pleurogrammus monopterygius
Name: Atlantic Anglerfish
Order: Lophiiformes
Habitat: Marine; Benthic
Scientific name: Lophius Pisces
Name: Atlantic Argentine
Order: Argentiniformes
Habitat: Marine; Deepwater
Scientific name: Argentina Silus
Name: Atlantic Bananafish
Order: Albuliformes
Habitat: Marine; Coastal
Scientific name: Albula Vulpes
Name: Atlantic Barracuda
Order: Perciformes
Habitat: Marine; Coastal
Scientific name: Sphyraena Argentea
Name: Atlantic Batfish
Order: Lophiiformes
Habitat: Marine; Benthic
Scientific name: Ogcocephalus Vespertilio
Name: Atlantic Bigeye
Order: Perciformes
Habitat: Marine; Coastal
Scientific name: Priacanthus Arenatus
Name: Atlantic Black Skipjack
Order: Scombriformes
Habitat: Marine; Pelagic
Scientific name: Euthynnus Alletteratus
Name: Atlantic Blue Marlin
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Makaira Nigricans
Name: Atlantic Bluefin Tuna
Order: Scombriformes
Habitat: Marine
Scientific name: Thunnus thynnus
Name: Atlantic Bonito
Order: Scombriformes
Habitat: Marine
Scientific name: Sarda sarda
Name: Atlantic Boxfish
Order: Tetraodontiformes
Habitat: Marine; Coral Reefs
Scientific name: Lactophrys Trigona
Name: Atlantic Bumper
Order: Carangiformes
Habitat: Marine
Scientific name: Chloroscombrus chrysurus
Name: Atlantic Butterfish
Order: Perciformes
Habitat: Marine
Scientific name: Peprilus triacanthus
Name: Atlantic Cod
Order: Gadiformes
Habitat: Marine
Scientific name: Gadus morhua
Name: Atlantic Codlet
Order: Gadiformes
Habitat: Marine
Scientific name: Gadus luscus
Name: Atlantic Croaker
Order: Perciformes
Habitat: Marine
Scientific name: Micropogonias undulatus
Name: Atlantic Cusk-eel
Order: Ophidiiformes
Habitat: Marine; Benthic
Scientific name: Ophidion Holbrookii
Name: Atlantic Cutlassfish
Order: Scombriformes
Habitat: Marine
Scientific name: Trichiurus lepturus
Name: Atlantic Damselfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Pomacentrus Leucostictus
Name: Atlantic Deep-water Houndshark
Order: Carcharhiniformes
Habitat: Marine; Deepwater
Scientific name: Iago Omanensis
Name: Atlantic Deepsea Angler
Order: Lophiiformes
Habitat: Marine; Deep Sea
Scientific name: Melanocetus Johnsonii
Name: Atlantic Dolphin
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Coryphaena Hippurus
Name: Atlantic Draconette
Order: Perciformes
Habitat: Marine; Benthic
Scientific name: Callionymus Dracunculus
Name: Atlantic Eagle Ray
Order: Myliobatiformes
Habitat: Marine; Coastal
Scientific name: Myliobatis Aquila
Name: Atlantic Flatfish
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Pleuronectes platessa
Name: Atlantic Flyingfish
Order: Beloniformes
Habitat: Marine
Scientific name: Cheilopogon melanurus
Name: Atlantic Footballfish
Order: Lophiiformes
Habitat: Marine; Deep Sea
Scientific name: Himantolophus Cornifer
Name: Atlantic Four-eye Butterflyfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Chaetodon Capistratus
Name: Atlantic Goatfish
Order: Perciformes
Habitat: Marine; Benthic
Scientific name: Mullus Auratus
Name: Atlantic Goliath Grouper
Order: Perciformes
Habitat: Marine
Scientific name: Epinephelus itajara
Name: Atlantic Green Moray
Order: Anguilliformes
Habitat: Marine; Reefs
Scientific name: Gymnothorax Funebris
Name: Atlantic Grenadier
Order: Gadiformes
Habitat: Deep Sea
Scientific name: Macrourus berglax
Name: Atlantic Grunt
Order: Perciformes
Habitat: Marine
Scientific name: Haemulon striatum
Name: Atlantic Gurard
Order: Scorpaeniformes
Habitat: Marine; Benthic
Scientific name: Prionotus Caroli
Name: Atlantic Hagfish
Order: Myxiniformes
Habitat: Marine
Scientific name: Myxine glutinosa
Name: Atlantic Halibut
Order: Pleuronectiformes
Habitat: Marine (North Atlantic)
Scientific name: Hippoglossus hippoglossus
Name: Atlantic Herring
Order: Clupeiformes
Habitat: Marine
Scientific name: Clupea harengus
Name: Atlantic Horse Mackerel
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Trachurus Trachurus
Name: Atlantic Houndfish
Order: Beloniformes
Habitat: Marine; Pelagic
Scientific name: Tylosurus Crocodilus
Name: Atlantic King Mackerel
Order: Scombriformes
Habitat: Marine; Coastal
Scientific name: Scomberomorus Cavalla
Name: Atlantic Lancetfish
Order: Aulopiformes
Habitat: Marine; Pelagic
Scientific name: Alepisaurus Ferox
Name: Atlantic Lizardfish
Order: Aulopiformes
Habitat: Marine
Scientific name: Synodus saurus
Name: Atlantic Mackerel
Order: Scombriformes
Habitat: Marine
Scientific name: Scomber scombrus
Name: Atlantic Menhaden
Order: Clupeiformes
Habitat: Marine
Scientific name: Brevoortia tyrannus
Name: Atlantic Midshipman
Order: Batrachoidiformes
Habitat: Marine
Scientific name: Porichthys plectrodon
Name: Atlantic Moonfish
Order: Perciformes
Habitat: Marine
Scientific name: Selene setapinnis
Name: Atlantic Needlefish
Order: Beloniformes
Habitat: Marine/Brackish
Scientific name: Strongylura marina
Name: Atlantic Ocean Perch
Order: Scorpaeniformes
Habitat: Marine; Deepwater
Scientific name: Sebastes Marinus
Name: Atlantic Onefin Sculpin
Order: Scorpaeniformes
Habitat: Marine; Deepwater
Scientific name: Psychrolutes Marmoratus
Name: Atlantic Parrotfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Sparisoma Viride
Name: Atlantic Pearlfish
Order: Ophidiiformes
Habitat: Marine; Commensal
Scientific name: Encheliophis Hottentota
Name: Atlantic Pearlside
Order: Stomiiformes
Habitat: Marine
Scientific name: Maurolicus muelleri
Name: Atlantic Pelagic Stingray
Order: Myliobatiformes
Habitat: Marine; Pelagic
Scientific name: Dasyatis Violacea
Name: Atlantic Pomfret
Order: Scombriformes
Habitat: Marine
Scientific name: Brama brama
Name: Atlantic Pompano
Order: Perciformes
Habitat: Marine; Coastal
Scientific name: Trachinotus Carolinus
Name: Atlantic Porcupinefish
Order: Tetraodontiformes
Habitat: Marine; Coral Reefs
Scientific name: Diodon Hystrix
Name: Atlantic Princess
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Gramma Loretto
Name: Atlantic Puffin
Order: Perciformes
Habitat: Freshwater (North America)
Scientific name: Perca flavescens
Name: Atlantic Red Hake
Order: Gadiformes
Habitat: Marine
Scientific name: Urophycis chuss
Name: Atlantic Red Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus campechanus
Name: Atlantic Sailfish
Order: Istiophoriformes
Habitat: Marine
Scientific name: Istiophorus platypterus
Name: Atlantic Salmon
Order: Salmoniformes
Habitat: Freshwater/Marine
Scientific name: Salmo salar
Name: Atlantic Sand Lance
Order: Ammodytiformes
Habitat: Marine; Sandy Benthic
Scientific name: Ammodytes Dubius
Name: Atlantic Sanddab
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Hippoglossoides platessoides
Name: Atlantic Sawshark
Order: Pristiophoriformes
Habitat: Marine; Deepwater
Scientific name: Pristiophorus Schroderi
Name: Atlantic Scabbardfish
Order: Perciformes
Habitat: Marine; Deepwater
Scientific name: Lepidopus Caudatus
Name: Atlantic Serpent Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Ophichthus punctifer
Name: Atlantic Sharpnose Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Rhizoprionodon terraenovae
Name: Atlantic Silverside
Order: Atheriniformes
Habitat: Marine
Scientific name: Menidia menidia
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Name: Atlantic Silverside (Menidia)
Order: Atheriniformes
Habitat: Marine
Scientific name: Menidia menidia
Name: Atlantic Smelt
Order: Osmeriformes
Habitat: Marine
Scientific name: Osmerus mordax
Name: Atlantic Spadefish
Order: Perciformes
Habitat: Marine
Scientific name: Chaetodipterus faber
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Name: Atlantic Spadefish (Chaetodipterus)
Order: Ephippiformes
Habitat: Marine
Scientific name: Chaetodipterus faber
Name: Atlantic Spanish Mackerel
Order: Scombriformes
Habitat: Marine; Coastal
Scientific name: Scomberomorus Maculatus
Name: Atlantic Spiny Dogfish
Order: Squaliformes
Habitat: Marine
Scientific name: Squalus acanthias
Name: Atlantic Spotted Dolphin
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Stenella Frontalis
Name: Atlantic Sturgeon
Order: Acipenseriformes
Habitat: Freshwater/Marine
Scientific name: Acipenser oxyrinchus oxyrinchus
Name: Atlantic Threadfin
Order: Polynemiformes
Habitat: Marine
Scientific name: Polydactylus octonemus
Name: Atlantic Torpedo
Order: Torpediniformes
Habitat: Marine
Scientific name: Torpedo nobiliana
Name: Atlantic Torpedo Ray
Order: Torpediniformes
Habitat: Marine; Benthic
Scientific name: Torpedo Nobiliana
Name: Atlantic Trumpetfish
Order: Syngnathiformes
Habitat: Marine; Reefs
Scientific name: Aulostomus Maculatus
Name: Atlantic Tuna
Order: Scombriformes
Habitat: Marine; Pelagic
Scientific name: Thunnus Thynnus
Name: Atlantic Viperfish
Order: Stomiiformes
Habitat: Marine; Deep Sea
Scientific name: Chauliodus Sloani
Name: Atlantic Wahoo
Order: Scombriformes
Habitat: Marine
Scientific name: Acanthocybium solandri
Name: Atlantic White Marlin
Order: Perciformes
Habitat: Marine; Pelagic
Scientific name: Kajikia Albida
Name: Atlantic Wolffish
Order: Perciformes
Habitat: Marine
Scientific name: Anarhichas lupus
Name: Atlantic Wreckfish
Order: Perciformes
Habitat: Marine
Scientific name: Polyprion americanus
Name: Atlantic Yellowfin Tuna
Order: Scombriformes
Habitat: Marine; Pelagic
Scientific name: Thunnus Albacares
Name: Atlantis Shark
Order: Carcharhiniformes
Habitat: Marine; Coastal
Scientific name: Carcharhinus Perezi
Name: Atomus Skilfish
Order: Scorpaeniformes
Habitat: Marine; Deepwater
Scientific name: Anoplopoma Fimbria
Name: Attenborough's Spiny Eel
Order: Synbranchiformes
Habitat: Freshwater (Sri Lanka)
Scientific name: Macrognathus attenboroughi
Name: Attenuated Snake Eel
Order: Anguilliformes
Habitat: Marine; Benthic
Scientific name: Pisodonophis Attenuatus
Name: Aubry's Cardinalfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Apogon Aubryi
Name: Auchenoglanis
Order: Siluriformes
Habitat: Freshwater (Africa)
Scientific name: Auchenoglanis
Name: Audet's Flathead
Order: Scorpaeniformes
Habitat: Marine; Benthic
Scientific name: Platycephalus Audeti
Name: Augusta's Goby
Order: Perciformes
Habitat: Marine; Sandy Bottom
Scientific name: Myersina Augusta
Name: Aulohalaelurus
Order: Carcharhiniformes
Habitat: Marine (Indo-Pacific)
Scientific name: Aulohalaelurus
Name: Aulopidae
Order: Aulopiformes
Habitat: Marine
Scientific name: Aulopus filamentosus
Name: Aulostomus
Order: Syngnathiformes
Habitat: Marine (Tropical/Subtropical)
Scientific name: Aulostomus
Name: Australian Lungfish
Order: Ceratodontiformes
Habitat: Freshwater
Scientific name: Neoceratodus forsteri
Name: Australian Spotted Handfish
Order: Lophiiformes
Habitat: Marine
Scientific name: Brachionichthys hirsutus
Name: Auxis
Order: Scombriformes
Habitat: Marine (Worldwide)
Scientific name: Auxis
Name: Avocet Snipe Eel
Order: Anguilliformes
Habitat: Deep Sea
Scientific name: Nemichthys scolopaceus
Name: Awaous Fluvialis
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Awaous Fluvialis
Name: Axillary Searobin
Order: Scorpaeniformes
Habitat: Marine; Benthic
Scientific name: Prionotus Axillaris
Name: Axilspot Hogfish
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Bodianus Axillaris
Name: Axilspot Wrasse
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Bodianus Axillaris
Name: Axolotl
Order: Urodela
Habitat: Freshwater
Scientific name: Ambystoma mexicanum
Name: Ayliffe's Tang
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Acanthurus Ayliffei
Name: Ayre's Triggerfish
Order: Tetraodontiformes
Habitat: Marine; Coral Reefs
Scientific name: Sufflamen Fraenatum
Name: Ayu
Order: Osmeriformes
Habitat: Freshwater/Marine (East Asia)
Scientific name: Plecoglossus altivelis
Name: Azalea Wrasse
Order: Perciformes
Habitat: Marine; Coral Reefs
Scientific name: Halichoeres Trispilus
Name: Aztec Dwarf Cichlid
Order: Perciformes
Habitat: Freshwater; Rivers
Scientific name: Apistogramma Aztecum
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Abalone | Vetigastropoda | Marine | Haliotidae |
| Abalone Snoek | Thunniformes | Marine | Thunnus alalunga |
| Abbott's Grunt | Perciformes | Marine | Pomadasys abbotti |
| Abbott's Halfbeak | Beloniformes | Marine; Estuarine | Hyporhamphus Abbott |
| Abbott's Moray | Anguilliformes | Marine | Gymnothorax abbotti |
| Abbott's Pipefish | Syngnathiformes | Marine | Fukangichthys acutipinnis |
| Abbott's Sailfin Blenny | Perciformes | Marine | Cirripectes albofasciatus |
| Abbott's Wolffish | Perciformes | Marine | Anarhichas orientalis |
| Abcan | Actinopterygii | Freshwater | Abcan obesus |
| Abdu's Anthias | Perciformes | Marine | Pseudanthias abdu |
| Aberdeen Angelfish | Perciformes | Marine; Coral Reefs | Genicanthus Aberdeeni |
| Aberdeen Angler | Lophiiformes | Marine | Lophiodes abei |
| Aberdeen Anglerfish | Lophiiformes | Marine | Lophius piscatorius |
| Aberdeen Cod | Gadiformes | Marine; Deepwater | Bregmaceros Macclellandi |
| Aboriginal Pipefish | Syngnathiformes | Marine | Hypselognathus horridus |
| Abronia | Actinopterygii | Freshwater | Abronia |
| Abudefduf | Perciformes | Marine | Abudefduf |
| Abyssal Anglerfish | Lophiiformes | Deep Sea | Melanocetidae |
| Abyssal Catshark | Carcharhiniformes | Marine | Apristurus profundorum |
| Abyssal Combtooth Blenny | Perciformes | Marine | Ophioblennius atlanticus |
| Abyssal Grenadier | Gadiformes | Deep Sea | Coryphaenoides armatus |
| Abyssal Liparid | Scorpaeniformes | Marine; Deep Sea | Paraliparis Bathybius |
| Abyssal Skate | Torpediniformes | Marine | Bathyraja abyssicola |
| Abyssobrotula | Ophidiiformes | Deep sea | Abyssobrotula galatheae |
| Acadian Cod | Gadiformes | Marine; Benthic | Gadus Morhua Mitchilli |
| Acadian Redfish | Scorpaeniformes | Marine | Sebastes fasciatus |
| Acadian Sturgeon | Acipenseriformes | Atlantic coast estuaries and rivers | Acipenser oxyrinchus oxyrinchus |
| Acanthemblemaria | Perciformes | Marine (Caribbean) | Acanthemblemaria |
| Acanthicus | Siluriformes | Freshwater | Acanthicus |
| Acanthicus Adas | Siluriformes | Freshwater (South America) | Acanthicus adas |
| Acanthicus Adone | Siluriformes | Amazon Basin | Acanthicus adonis |
| Acanthicus Hystrix | Siluriformes | Freshwater (South America) | Acanthicus hystrix |
| Acanthistius | Perciformes | Marine | Acanthistius |
| Acanthobothrium | Platyhelminthes | Marine | Acanthobothrium |
| Acanthocephala | Acanthocephala | Freshwater/Marine (parasite) | Acanthocephala |
| Acanthocharax | Characiformes | Freshwater | Acanthocharax |
| Acanthochromis | Perciformes | Marine | Acanthochromis polyacanthus |
| Acanthocleithron | Tetraodontiformes | Marine | Acanthocleithron |
| Acanthodes | Acanthodiformes | Ancient fresh and marine waters | Acanthodes bronni |
| Acanthodians | Acanthodii | Freshwater | Acanthodii |
| Acanthoesox | Esociformes | Freshwater (extinct) | Acanthoesox |
| Acanthogobius | Perciformes | Marine/Brackish | Acanthogobius |
| Acantholatris | Perciformes | Marine | Acantholatris |
| Acanthopagrus | Perciformes | Marine/Brackish | Acanthopagrus |
| Acanthoplesiops | Perciformes | Marine | Acanthoplesiops |
| Acanthorhodeus | Cypriniformes | Freshwater | Acanthorhodeus |
| Acanthoscapheus | Perciformes | Marine (extinct) | Acanthoscapheus |
| Acanthurus | Perciformes | Marine | Acanthurus |
| Acanthurus Achilles | Perciformes | Marine (Pacific) | Acanthurus achilles |
| Acanthurus Auranticavus | Perciformes | Marine (Indo-Pacific) | Acanthurus auranticavus |
| Acanthurus Bariene | Perciformes | Marine (Indo-Pacific) | Acanthurus bariene |
| Acanthurus Blochii | Perciformes | Marine (Indo-Pacific) | Acanthurus blochii |
| Acanthurus Chronixis | Perciformes | Marine (Pacific) | Acanthurus chronixis |
| Acanthurus Coeruleus | Perciformes | Marine (Atlantic) | Acanthurus coeruleus |
| Acanthurus Dussumieri | Perciformes | Marine (Indo-Pacific) | Acanthurus dussumieri |
| Acanthurus Fowleri | Perciformes | Marine (Pacific) | Acanthurus fowleri |
| Acanthurus Guttatus | Perciformes | Marine (Pacific) | Acanthurus guttatus |
| Acanthurus Japonicus | Perciformes | Marine (Pacific) | Acanthurus japonicus |
| Acanthurus Leucopareius | Perciformes | Marine (Pacific) | Acanthurus leucopareius |
| Acanthurus Leucosternon | Perciformes | Marine (Indian Ocean) | Acanthurus leucosternon |
| Acanthurus Lineatus | Perciformes | Marine (Indo-Pacific) | Acanthurus lineatus |
| Acanthurus Maculiceps | Perciformes | Marine (Indo-Pacific) | Acanthurus maculiceps |
| Acanthurus Nigricans | Perciformes | Marine (Pacific) | Acanthurus nigricans |
| Acanthurus Nigricauda | Perciformes | Marine (Indo-Pacific) | Acanthurus nigricauda |
| Acanthurus Nigrofuscus | Perciformes | Marine (Indo-Pacific) | Acanthurus nigrofuscus |
| Acanthurus Olivaceus | Perciformes | Marine (Indo-Pacific) | Acanthurus olivaceus |
| Acanthurus Pyroferus | Perciformes | Marine (Indo-Pacific) | Acanthurus pyroferus |
| Acanthurus Tennentii | Perciformes | Marine (Indian Ocean) | Acanthurus tennentii |
| Acanthurus Triostegus | Perciformes | Marine (Indo-Pacific) | Acanthurus triostegus |
| Acanthurus Xanthopterus | Perciformes | Marine (Indo-Pacific) | Acanthurus xanthopterus |
| Acarichthys | Perciformes | Freshwater | Acarichthys heckelii |
| Acarnatus | Perciformes | Marine | Acarnatus |
| Acaronia | Perciformes | Freshwater | Acaronia |
| Accra Goby | Perciformes | Marine (Atlantic) | Gobionellus occidentalis |
| Accretion Fish | Beryciformes | Marine | Monocentris reedi |
| Acerina | Perciformes | Freshwater lakes and rivers of Eurasia | Gymnocephalus cernua |
| Acetabularia Goby | Perciformes | Marine (Mediterranean) | Gobius platycephalus |
| Acheilognathus | Cypriniformes | Freshwater rivers and lakes of East Asia | Acheilognathus rhombeus |
| Acheilognathus rhombeus | Cypriniformes | Freshwater | Acheilognathus rhombeus |
| Achiridae | Pleuronectiformes | Marine/Brackish | Achiridae |
| Achiroides | Pleuronectiformes | Freshwater/Brackish | Achiroides |
| Achirus | Pleuronectiformes | Marine/Brackish | Achirus |
| Achirus Lineatus | Pleuronectiformes | Marine (Atlantic) | Achirus lineatus |
| Achoerodus | Perciformes | Marine | Achoerodus |
| Acholoceus | Actinopterygii | Marine (extinct) | Acholoceus |
| Acipenseriformes | Acipenseriformes | Freshwater and marine | Acipenseriformes |
| Acnodon Platinus | Characiformes | Freshwater (South America) | Acnodon platinus |
| Acorn Barnacle Blenny | Blenniiformes | Tropical Eastern Pacific | Acanthemblemaria hancocki |
| Acromycter Pertusus | Anguilliformes | Marine (Deepwater) | Acromycter pertusus |
| Acropoma Japonicum | Perciformes | Marine; Deepwater | Acropomatidae |
| Actinopterygii | Actinopterygii | Various | Actinopterygii |
| Acuticephalus | Cypriniformes | Freshwater | Acuticephalus |
| Adelaide Pipefish | Syngnathiformes | Marine (Australia) | Hypselognathus horridus |
| Adelosebastes | Scorpaeniformes | Marine; Deep Sea | Adelosebastes |
| Adeonella Flathead | Perciformes | Marine (Indo-Pacific) | Grammoplites scaber |
| Adinia | Cyprinodontiformes | Coastal marshes and brackish waters of the southeastern US | Adinia xenica |
| Adinia Xenica | Cyprinodontiformes | Freshwater/Brackish (North America) | Adinia xenica |
| Adioryx | Beryciformes | Marine | Adioryx |
| Adirondack Sculpin | Scorpaeniformes | Freshwater | Cottus cognatus |
| Adler's Pipefish | Syngnathiformes | Marine (Pacific) | Corythoichthys adlerus |
| Adlerfisch | Perciformes | Marine | Argyrosomus regius |
| Adolfus' Killifish | Cyprinodontiformes | Freshwater; Temporary Pools | Nothobranchius Adolfi |
| Adonis Cichlid | Cichliformes | Freshwater (Lake Tanganyika) | Cyprichromis leptosoma |
| Adonis Snailfish | Scorpaeniformes | Marine; Deep Sea | Careproctus Adonis |
| Adorned Coralblenny | Blenniiformes | Western Pacific coral reefs | Ecsenius adornatus |
| Adorned Dwarf Goby | Gobiiformes | Indo-Pacific coral reefs | Trimma anaima |
| Adrianichthys | Adrianichthyiformes | Freshwater (Sulawesi) | Adrianichthys |
| Adriatic Sturgeon | Acipenseriformes | Freshwater/Brackish | Acipenser naccarii |
| Aegleichthys Pistor | Scorpaeniformes | Marine (Pacific) | Aegleichthys pistor |
| Aelurillus Agilis | Cichliformes | Freshwater (Lake Malawi) | Aelurillus agilis |
| Aenigmacanthus | Perciformes | Marine (extinct) | Aenigmacanthus |
| Aequidens | Cichliformes | South America | Aequidens pulcher |
| Aequidens Diadema | Perciformes | Freshwater; Rivers | Aequidens Diadema |
| Aeroplane Flying Fish | Beloniformes | Marine; Pelagic | Cheilopogon Pinnatibarbatus |
| Aerosusa Iago | Lampriformes | Marine; Deepwater | Aerosusa Iago |
| Aetapcus | Scorpaeniformes | Marine | Aetapcus |
| Afghan Barb | Cypriniformes | Freshwater (Afghanistan) | Capoeta buhsei |
| Africalcaria | Teleostei | Ancient marine environments (extinct) | Africalcaria |
| African Assfish | Ophidiiformes | Deep Sea | Acanthonus armatus |
| African Banded Barb | Cypriniformes | Freshwater rivers and lakes of Africa | Enteromius fasciolatus |
| African Barb | Cypriniformes | Freshwater | Barbus |
| African Barracuda | Scombriformes | Marine | Sphyraena afra |
| African Bellowsfish | Syngnathiformes | Marine; Deepwater | Macroramphosus Scolopax |
| African Blind Barb | Cypriniformes | Freshwater | Caecobarbus geertsii |
| African Bonytongue | Osteoglossiformes | Freshwater | Heterotis niloticus |
| African Bottlenose | Mormyriformes | Freshwater | Mormyrus longirostris |
| African Bush Fish | Perciformes | Freshwater | Ctenopoma |
| African Butterfly Rasbora | Cypriniformes | Freshwater lakes of Africa | Microrasbora nana |
| African Butterflyfish | Osteoglossiformes | Freshwater | Pantodon buchholzi |
| African Cichlid | Cichliformes | Freshwater | Cichlidae |
| African Climber | Perciformes | Freshwater rivers and floodplains of West Africa | Ctenopoma kingsleyae |
| African Clown Knifefish | Osteoglossiformes | Freshwater | Chitala ornata |
| African Comet | Cichliformes | Freshwater (Lake Malawi) | Labidochromis caeruleus |
| African Electric Catfish | Siluriformes | Freshwater | Malapterurus electricus |
| African Flagfin | Perciformes | Freshwater | Epalzeorhynchos kalopterus |
| African Freshwater Sole | Pleuronectiformes | Freshwater | Synaptura zebra |
| African Glass Catfish | Siluriformes | Freshwater | Pareutropius debauwi |
| African Gold Barb | Cypriniformes | Freshwater | Puntius 'schwanefeldi' |
| African Gray Snapper | Perciformes | Marine | Lutjanus griseus |
| African Humpback Mormyrid | Osteoglossiformes | Freshwater | Mormyrus kannume |
| African Knife Rasbora | Cypriniformes | Freshwater | Rasbora borapetensis |
| African Knifefish | Osteoglossiformes | Freshwater | Gymnarchus niloticus |
| African Knifefish (Gymnarchus) | Osteoglossiformes | Freshwater | Gymnarchus niloticus |
| African Lampeye | Cyprinodontiformes | Freshwater | Aplocheilichthys normani |
| African Lungfish | Ceratodontiformes | Freshwater | Protopterus aethiopicus |
| African Moontail | Cichliformes | Freshwater (Lake Tanganyika) | Cyprichromis zonatus |
| African Moony | Perciformes | Estuaries and coastal waters of West Africa | Monodactylus sebae |
| African Mormyrid | Osteoglossiformes | Freshwater | Mormyridae (various genera) |
| African Mudfish | Siluriformes | Freshwater | Clarias gariepinus |
| African Onejaw | Synbranchiformes | Freshwater | Monopterus indicus |
| African Pike | Characiformes | Freshwater | Hepsetus ocellatus |
| African Pike (juvenile) | Perciformes | Freshwater | Hepsetus odoe |
| African Pike Characin | Characiformes | Freshwater | Hepsetus odoe |
| African Pike Cichlid | Cichliformes | Freshwater | Crenicichla |
| African Pike Killifish | Cyprinodontiformes | Freshwater rivers and streams of West Africa | Epiplatys chaperi |
| African Red Hump Geophagus | Cichliformes | Freshwater | Geophagus steindachneri |
| African Red Snapper | Perciformes | Marine | Lutjanus agennes |
| African Red Tailed Catfish | Siluriformes | Freshwater | Phractocephalus hemioliopterus |
| African Redfin | Cypriniformes | Freshwater | Barbus unitaeniatus |
| African Redfin Haplo | Cichliformes | Lake Victoria Basin | Astatotilapia atra |
| African Shark Catfish | Siluriformes | Freshwater | Pardiglanis tardus |
| African Sharptooth Catfish | Siluriformes | Freshwater | Clarias gariepinus |
| African Snakehead | Anabantiformes | Freshwater | Parachanna obscura |
| African Snapper | Perciformes | Marine | Lutjanus agennes |
| African Speckled Mastacembelus | Synbranchiformes | Freshwater | Mastacembelus armatus |
| African Spiny Eel | Synbranchiformes | Freshwater | Mastacembelus nigromarginatus |
| African Spinyfin | Beryciformes | Marine | Diretmus argenteus |
| African Spotfin Mojarra | Gerreiformes | Marine | Gerres nigri |
| African Spotted Catfish | Siluriformes | Freshwater | Clarias gariepinus |
| African Spotted Eel | Anguilliformes | Freshwater rivers and Africa | Anguilla nebulosa labiata |
| African Spotted Knife | Osteoglossiformes | Freshwater | Xenomystus nigri |
| African Spotted Knifefish | Osteoglossiformes | Freshwater | Xenomystus nigri |
| African Spotted Puffer | Tetraodontiformes | Freshwater | Tetraodon lineatus |
| African Sprat | Clupeiformes | Marine; Coastal | Spratelloides Gracilis |
| African Striped Barb | Cypriniformes | Freshwater | Barbus paludinosus |
| African Striped Killifish | Cyprinodontiformes | Freshwater rivers of Central Africa | Aphyosemion striatum |
| African Striped Knife Fish | Osteoglossiformes | Freshwater | Gymnarchus niloticus |
| African Striped Mudfish | Siluriformes | Freshwater swamps and lakes of East Africa | Clarias alluaudi |
| African Striped Sea Bream | Spariformes | Marine | Boops boops |
| African Tetra | Characiformes | Freshwater | Alestidae (various genera) |
| African Tetras | Characiformes | Freshwater | Alestidae |
| African Threadfin | Polynemiformes | Coastal waters of West Africa | Polydactylus quadrifilis |
| African Tiger Barb | Cypriniformes | Freshwater | Puntius tetrazona |
| African Tiger Perch | Perciformes | Freshwater (Extinct) | Perca africana |
| African Tigerfish | Characiformes | Freshwater | Hydrocynus vittatus |
| African Topminnow | Cyprinodontiformes | Freshwater rivers and streams of West Africa | Aplocheilichthys normani |
| African Tyulka | Clupeiformes | Freshwater/Brackish | Clupeonella mardakha |
| African Umbrellafish | Gobiesociformes | Freshwater | Chiloglanis niloticus |
| African Upside Down Catfish | Siluriformes | Freshwater | Synodontis nigriventris |
| African Upside-Down Catfish | Siluriformes | Freshwater rivers of Central Africa | Synodontis nigriventris |
| African Whiptail Catfish | Siluriformes | Freshwater | Sturisoma festivum |
| African Wolffish | Perciformes | Freshwater | Parachanna africana |
| Afrocara | Cichliformes | Freshwater (Africa) | Afrocara |
| Afrocaylix | Siluriformes | Freshwater rivers of Africa | Afrocaylix |
| Afrocaymanops | Siluriformes | Freshwater (Africa) | Afrocaymanops |
| Afrocranogobius | Perciformes | Freshwater | Afrocranogobius |
| Afrotapia | Perciformes | Freshwater | Afrotapia |
| Afrotetraodon | Tetraodontiformes | Freshwater (Africa) | Afrotetraodon |
| Afurcating | Cypriniformes | Freshwater (Asia) | Afurcating |
| Agassiz' Cavefish | Percopsiformes | Freshwater; Caves | Amblyopsis Spelaea |
| Agassiz's Corydoras | Siluriformes | Freshwater (Amazon Basin) | Corydoras agassizii |
| Agassiz's Driftfish | Perciformes | Marine; Deepwater | Schedophilus Ovalis |
| Agassiz's Dwarf Cichlid | Cichliformes | Freshwater (Amazon Basin) | Apistogramma agassizii |
| Agassiz's Goby | Gobiiformes | Marine | Gobius agassizii |
| Agassiz's Killifish | Cyprinodontiformes | Freshwater ponds and streams of the southeastern US | Fundulus notti |
| Agassiz's Silverside | Atheriniformes | Marine/Freshwater | Menidia beryllina |
| Agassiz's Slender Clingfish | Gobiesociformes | Marine | Cochleoceps orientalis |
| Agassiz's Topminnow | Cyprinodontiformes | Freshwater (North America) | Fundulus notidens |
| Ageneiosus Abernathi | Siluriformes | Freshwater (South America) | Ageneiosus abernathi |
| Agenjo's Conger | Anguilliformes | Marine (Atlantic) | Ariosoma agenjoia |
| Agile Frogfish | Lophiiformes | Marine | Antennatus dorehensis |
| Aglaia Goby | Perciformes | Marine (Indo-Pacific) | Priolepis aglaia |
| Agnatha | Agnatha | Marine; Freshwater; Diverse | Agnatha |
| Agnes' Killifish | Cyprinodontiformes | Freshwater; Forest Streams | Aphyosemion Agnesae |
| Agonopsis | Scorpaeniformes | Marine (Pacific) | Agonopsis |
| Agonopsis Hozukii | Scorpaeniformes | Marine (Pacific) | Agonopsis hozukii |
| Agonus Decagonus | Scorpaeniformes | Marine (Arctic) | Agonus decagonus |
| Agrammus | Scorpaeniformes | Marine (North Pacific) | Agrammus |
| Agulhas Sole | Pleuronectiformes | Marine (Indian Ocean) | Austroglossus pectoralis |
| Ahernodus | Perciformes | Marine (extinct) | Ahernodus |
| Ahl's Discus | Perciformes | Freshwater; Rivers | Symphysodon Aherdi |
| Ahl's Killifish | Cyprinodontiformes | Freshwater (Africa) | Aplocheilichthys normani |
| Ahliesaurus | Aulopiformes | Marine | Ahliesaurus |
| Ahohia | Cypriniformes | Freshwater; Rivers | Puntius Sachsi |
| Aigle des Mers (Eagle Ray) | Myliobatiformes | Marine | Myliobatis aquila |
| Aiguille de Mer (Needlefish) | Beloniformes | Marine | Belone belone |
| Ailia Coila | Siluriformes | Freshwater; Rivers | Ailiidae |
| Ailurichthys | Siluriformes | Freshwater | Ailurichthys |
| Aipichthys | Salmoniformes | Marine (extinct) | Aipichthys |
| Air-breathing Catfish | Siluriformes | Freshwater | Clarias batrachus |
| Aka Tombo | Perciformes | Marine; Benthic | Synodus Tumbil |
| Akagi's Goby | Perciformes | Marine; Coral Reefs | Gobiodon Akagii |
| Akame (Lates microlepis) | Perciformes | Freshwater | Lates microlepis |
| Akami | Perciformes | Marine; Coral Reefs | Lethrinus Eboninus |
| Akebono-haze | Perciformes | Marine; Coral Reefs | Amblyeleotris Japonica |
| Aki-haze | Perciformes | Marine; Coral Reefs | Eviota Enebiota |
| Akko Goby | Perciformes | Marine | Akko |
| Akysidae | Siluriformes | Freshwater | Akysidae |
| Ala-dorsa Grouper | Perciformes | Marine; Coral Reefs | Epinephelus Fascoguttatus |
| Alabama Cavefish | Percopsiformes | Freshwater; Caves | Speoplatyrhinus Pondi |
| Alacran's Cardinalfish | Perciformes | Marine; Coral Reefs | Apogon Alacranus |
| Alaska Blackfish | Esociformes | Freshwater | Dallia pectoralis |
| Alaska Pollack | Gadiformes | Marine | Gadus chalcogrammus |
| Alaska Pollock | Gadiformes | Marine | Gadus chalcogrammus |
| Alaska Sculpin | Scorpaeniformes | Coastal waters of the North Pacific | Myoxocephalus brandtii |
| Alaskan Blackfish | Esociformes | Freshwater | Dallia pectoralis |
| Alaskan Brook Lamprey | Petromyzontiformes | Freshwater streams of Alaska | Lethenteron alaskense |
| Alaskan Dusky Rockfish | Scorpaeniformes | Coastal waters of the North Pacific | Sebastes ciliatus |
| Alaskan Plaice | Pleuronectiformes | Marine; Benthic | Pleuronectes Quadrituberculatus |
| Alatheca | Placodermi | Ancient marine environments (extinct) | Alatheca |
| Alausa Fallax | Clupeiformes | Freshwater/Brackish (Europe) | Alausa fallax |
| Albacore | Scombriformes | Marine | Thunnus alalunga |
| Albacore Tuna | Scombriformes | Marine | Thunnus alalunga |
| Albany Emperor | Lutjaniformes | Indo-Pacific coral reefs | Lethrinus miniatus |
| Albany Snapper | Lutjaniformes | Indo-Pacific coral reefs (same as Albany Emperor?) | Lutjanus fulvus |
| Albert's Killifish | Cyprinodontiformes | Freshwater; Rivers | Aphyosemion Albertsi |
| Albert's Lyretail | Cyprinodontiformes | Freshwater | Aphyosemion albertiserpai |
| Alberta Trout-perch | Percopsiformes | Freshwater | Percopsis transmontana |
| Albi | Cypriniformes | Freshwater rivers of Europe | Rutilus alburnoides |
| Albino Bristlenose Pleco | Siluriformes | Amazon Basin (aquarium strain) | Ancistrus sp. |
| Albula | Albuliformes | Tropical and subtropical marine waters | Albula vulpes |
| Albula Cali | Albuliformes | Marine (Pacific) | Albula cali |
| Albula Glossodonta | Albuliformes | Marine (Indo-Pacific) | Albula glossodonta |
| Albula Nemoptera | Albuliformes | Marine (Indo-Pacific) | Albula nemoptera |
| Albula vulpes | Albuliformes | Tropical and subtropical marine waters | Albula vulpes |
| Albuliformes | Albuliformes | Tropical and subtropical marine waters | Albuliformes |
| Alburnoides | Cypriniformes | Freshwater | Alburnoides |
| Alburnus | Cypriniformes | Freshwater/Brackish | Alburnus |
| Aldebaran Coralfish | Perciformes | Marine (Red Sea) | Chaetodon austriacus |
| Alectis | Carangiformes | Tropical and subtropical Indo-Pacific | Alectis indicus |
| Alepes Melanoptera | Carangiformes | Marine (Indo-Pacific) | Alepes melanoptera |
| Alepisaurus | Aulopiformes | Marine | Alepisaurus |
| Alepocephalidae | Alepocephaliformes | Deep sea | Alepocephalus bairdii |
| Alepocephaliformes | Alepocephaliformes | Deep sea | Alepocephaliformes |
| Alepocephalus | Salmoniformes | Marine | Alepocephalus |
| Aleutiana Sculpin | Scorpaeniformes | Marine (Pacific) | Myoxocephalus aleutianus |
| Alewife | Clupeiformes | Marine/Freshwater | Alosa pseudoharengus |
| Alexandria Sole | Pleuronectiformes | Marine | Solea aegyptiaca |
| Alfonsin | Beryciformes | Marine | Beryx mollis |
| Alfonsino | Beryciformes | Marine | Beryx splendens |
| Algae Blenny | Blenniiformes | Indo-Pacific coral reefs | Salarias fasciatus |
| Algae Cod | Gadiformes | Marine | Bregmaceros cantori |
| Algal Blenny | Perciformes | Marine | Parablennius marmoratus |
| Algertia | Perciformes | Marine (extinct) | Algertia |
| Alianna's Wrasse | Perciformes | Marine | Cirrhilabrus aliannae |
| Alla Kuru | Cypriniformes | Freshwater (India) | Tor tor |
| Allegheny Brook Lamprey | Petromyzontiformes | Freshwater streams of eastern North America | Lampetra aepyptera |
| Alligator Gar | Lepisosteiformes | Freshwater/Brackish | Atractosteus spatula |
| Alligator Pipefish | Syngnathiformes | Marine (Indo-Pacific) | Syngnathoides biaculeatus |
| Alligatorfish | Scorpaeniformes | Marine | Agonus acipenserinus |
| Allis Shad | Clupeiformes | Coastal waters and rivers of Europe | Alosa alosa |
| Allocareproctus | Scorpaeniformes | Marine | Allocareproctus |
| Allocottus | Scorpaeniformes | Freshwater | Allocottus |
| Allodontichthys | Cyprinodontiformes | Freshwater | Allodontichthys |
| Allolepis | Scorpaeniformes | Marine | Allolepis |
| Allomurus | Gadiformes | Marine | Allomurus |
| Allomyrina | Tetraodontiformes | Marine | Allomyrina |
| Allosmerus | Osmeriformes | Marine | Allosmerus elongatus |
| Allothunnus | Perciformes | Marine | Allothunnus fallai |
| Almaco Jack | Carangiformes | Marine | Seriola rivoliana |
| Almas Caviar Sturgeon | Acipenseriformes | Freshwater/Brackish (Caspian Sea) | Huso huso |
| Alopias Superciliosus | Lamniformes | Marine (Atlantic) | Alopias superciliosus |
| Alosa | Clupeiformes | Coastal waters and rivers of North America | Alosa sapidissima |
| Alosa Sapidissima | Clupeiformes | Freshwater/Brackish (North America) | Alosa sapidissima |
| Alosapsetta | Pleuronectiformes | Marine (extinct) | Alosapsetta |
| Alotonus | Perciformes | Marine (extinct) | Alotonus |
| Alpena Cisco | Salmoniformes | Freshwater (Extinct) | Coregonus alpenae |
| Alpha Dragonet | Perciformes | Marine; Coral Reefs | Synchiropus Alpha |
| Alphes' Grunt | Perciformes | Marine; Coastal | Pomadasys Alphes |
| Alphestes | Perciformes | Marine | Alphestes |
| Alphestes Multiguttatus | Perciformes | Marine; Coral Reefs | Alphestes Multiguttatus |
| Alphonse | Beryciformes | Marine | Beryx decadactylus |
| Alpine Bullhead | Scorpaeniformes | Freshwater | Cottus poecilopus |
| Alpine Char | Salmoniformes | Cold freshwater lakes and rivers of the Northern Hemisphere | Salvelinus alpinus |
| Alpine Goby | Gobiiformes | Freshwater rivers and lakes of Italy | Padogobius bonelli |
| Alpine Loach | Cypriniformes | Freshwater rivers and lakes of high altitudes in Asia | Triplophysa stoliczkai |
| Alpine Spined Loach | Cypriniformes | Freshwater rivers and lakes of Europe | Cobitis taenia |
| Alpiniiformes | Alpiniiformes | Ancient marine waters (extinct) | Alpiniiformes |
| Alpiscis | Cypriniformes | Freshwater (extinct) | Alpiscis |
| Alstonia | Gadiformes | Marine (extinct) | Alstonia |
| Alticus Salirens | Perciformes | Marine; Rocky Shores | Alticus Salirens |
| Altolamprologus Calvus | Cichliformes | Freshwater (Lake Tanganyika) | Altolamprologus calvus |
| Altolamprologus Compressiceps | Cichliformes | Freshwater (Lake Tanganyika) | Altolamprologus compressiceps |
| Altum Angelfish | Perciformes | Freshwater; Rivers | Pterophyllum Altum |
| Alutera Scripta | Tetraodontiformes | Marine; Tropical | Alutera Scripta |
| Aluterus | Tetraodontiformes | Marine | Aluterus |
| Alverca Barbel | Cypriniformes | Freshwater rivers of Portugal | Luciobarbus bocagei |
| Amacrodon | Perciformes | Marine (extinct) | Amacrodon |
| Amago | Salmoniformes | Freshwater (Japan) | Oncorhynchus masou macrostomus |
| Amami Rabbitfish | Siganiformes | Marine | Siganus spinus |
| Amanses | Tetraodontiformes | Marine | Amanses |
| Amaranth Cichlid | Cichliformes | Freshwater rivers of West Africa | Hemichromis guttatus |
| Amassona Cichlid | Perciformes | Freshwater; Rivers | Cichla Amasisona |
| Amateur Bass | Perciformes | Freshwater | Lates mariae |
| Amathys | Perciformes | Marine | Amathys |
| Amazon Dasylophus | Siluriformes | Freshwater | Oxydoras niger |
| Amazon Dwarf Cichlid | Cichliformes | Freshwater (Amazon Basin) | Apistogramma cacatuoides |
| Amazon Leaf Fish | Perciformes | Freshwater (Amazon Basin) | Monocirrhus polyacanthus |
| Amazon Marbled Catfish | Siluriformes | Freshwater | Brochis splendens |
| Amazon Molly | Cyprinodontiformes | Freshwater rivers and lakes of Mexico and Texas | Poecilia formosa |
| Amazon Puffer | Tetraodontiformes | Freshwater | Colomesus asellus |
| Amazon Ribbontail Catfish | Siluriformes | Amazon Basin | Loricaria lata |
| Amazon Sailfin Catfish | Siluriformes | Freshwater (Amazon Basin) | Pterygoplichthys pardalis |
| Amazon Stingray | Myliobatiformes | Freshwater (Amazon Basin) | Potamotrygon motoro |
| Amazon Swordtail | Cyprinodontiformes | Freshwater | Xiphophorus helleri |
| Amazonian Angelfish | Cichliformes | Freshwater | Pterophyllum leopoldi |
| Amazonian Catfish | Siluriformes | Amazon Basin | Phractocephalus hemioliopterus |
| Ambasia | Perciformes | Freshwater | Ambasia |
| Ambassidae | Perciformes | Marine/Brackish/Freshwater | Ambassidae |
| Amber Dwarf Goby | Gobiiformes | Indo-Pacific coral reefs | Trimma anas |
| Amber Jack | Perciformes | Marine; Pelagic | Seriola Dumerili |
| Amber Snapper | Perciformes | Marine (Indo-Pacific) | Lutjanus fulvus |
| Amberjack | Carangiformes | Marine | Seriola dumerili |
| Ambloplites | Perciformes | Freshwater rivers and lakes of Eastern and Central North America | Ambloplites rupestris |
| Amblyceps Mangois | Siluriformes | Freshwater (Asia) | Amblyceps mangois |
| Amblycirrhitus | Perciformes | Marine | Amblycirrhitus |
| Amblydoras | Siluriformes | Freshwater | Amblydoras |
| Amblyeleotris | Gobiiformes | Indo-Pacific coral reefs | Amblyeleotris guttata |
| Amblyeleotris Aurora | Perciformes | Marine (Indo-Pacific) | Amblyeleotris aurora |
| Amblyeleotris Gecostegus | Perciformes | Marine (Indo-Pacific) | Amblyeleotris gecostegus |
| Amblyeleotris Sungami | Perciformes | Marine (Pacific) | Amblyeleotris sungami |
| Amblygaster | Clupeiformes | Marine | Amblygaster |
| Amblygaster Sirm | Clupeiformes | Marine (Indo-Pacific) | Amblygaster sirm |
| Amblygobius | Perciformes | Marine | Amblygobius |
| Amblyopinae | Perciformes | Marine/Brackish | Amblyopinae |
| Amblyopsis | Percopsiformes | Subterranean freshwaters of North America | Amblyopsis spelaea |
| Amblyraja | Rajiformes | Marine | Amblyraja |
| Amblyrhynchotes | Tetraodontiformes | Indo-Pacific (pufferfish) | Amblyrhynchotes honckenii |
| Ambon Damselfish | Perciformes | Marine; Coral Reefs | Pomacentrus Amboinensis |
| Ambon Goby | Perciformes | Marine; Coral Reefs | Amblygobius Ambon |
| Ambon Scorpionfish | Scorpaeniformes | Marine; Coral Reefs | Pterois Ambon |
| Ambon Shark | Carcharhiniformes | Marine; Coastal | Carcharhinus Amboinensis |
| Ambrosia Fish | Perciformes | Marine | Ambrosia thompsoni |
| Ambush Bugfish | Scorpaeniformes | Marine; Benthic | Paracentropogon Vespoides |
| Ambystoma mexicanum | Urodela | Freshwater | Ambystoma mexicanum |
| Ameca splendens | Cyprinodontiformes | Freshwater (Mexico) | Ameca splendens |
| Ameiurus | Siluriformes | Freshwater | Ameiurus |
| American Angler | Lophiiformes | Marine; Benthic | Lophius Americanus |
| American Backfin | Perciformes | Marine (Atlantic) | Pristigenys alta |
| American Bonito | Scombriformes | Marine; Pelagic | Sarda Sarda |
| American Brook Lamprey | Petromyzontiformes | Freshwater | Lethenteron appendix |
| American Butterfish | Perciformes | Marine; Pelagic | Peprilus Triacanthus |
| American Conger Eel | Anguilliformes | Marine | Conger oceanicus |
| American Eel | Anguilliformes | Freshwater/Brackish/Marine | Anguilla rostrata |
| American Flagfish | Cyprinodontiformes | Freshwater (North America) | Jordanella floridae |
| American Goodea | Cyprinodontiformes | Freshwater (Mexico) | Goodea atripinnis |
| American Goosefish | Lophiiformes | Marine | Lophius americanus |
| American Grouper | Perciformes | Marine | Mycteroperca microlepis |
| American Hairtail | Perciformes | Marine; Estuarine | Trichiurus Lepturus |
| American Hake | Gadiformes | Marine | Urophycis chuss |
| American Halfbeak | Beloniformes | Marine | Hyporhamphus unifasciatus |
| American Halibut | Pleuronectiformes | Marine; Benthic | Hippoglossus Hippoglossus |
| American John Dory | Zeiformes | Marine | Zenopsis conger |
| American Paddlefish | Acipenseriformes | Freshwater | Polyodon spathula |
| American Plaice | Pleuronectiformes | Marine | Hippoglossoides platessoides |
| American Pomfret | Perciformes | Marine; Pelagic | Brama Brama |
| American Red Snapper | Perciformes | Marine; Benthic | Lutjanus Campechanus |
| American Sardine | Clupeiformes | Marine (Atlantic) | Sardinella aurita |
| American Shad | Clupeiformes | Marine/Freshwater | Alosa sapidissima |
| American Silver Hake | Gadiformes | Marine; Deepwater | Merluccius Bilinearis |
| American Sole | Pleuronectiformes | Marine; Brackish; Benthic | Achirus Lineatus |
| American Spineless Dogfish | Squaliformes | Marine; Deepwater | Centroscyllium Fabricii |
| American Star Gazer | Perciformes | Marine; Benthic | Astroscopus Guttatus |
| American Toadfish | Batrachoidiformes | Marine; Estuarine | Opsanus Tau |
| Amia | Amiiformes | Freshwater rivers and lakes of Eastern North America | Amia calva |
| Amia Calva | Amiiformes | Freshwater (North America) | Amia calva |
| Amia calva | Amiiformes | Freshwater rivers and lakes of Eastern North America | Amia calva |
| Amiidae | Amiiformes | Freshwater (North America) | Amiidae |
| Amiiformes | Amiiformes | Freshwater rivers and lakes of Eastern North America | Amiiformes |
| Amiloa | Acanthodii | Ancient marine environments (extinct) | Amiloa |
| Amiopsis | Amiiformes | Fossil (Freshwater) | Amiopsis |
| Ammodytes | Gobiiformes | Temperate marine waters | Ammodytes hexapterus |
| Amniataba | Perciformes | Freshwater | Amniataba |
| Amphiacanthus | Perciformes | Marine (extinct) | Amphiacanthus |
| Amphichthys | Batrachoidiformes | Marine | Amphichthys |
| Amphilius | Siluriformes | Freshwater streams of West Africa | Amphilius atesuensis |
| Amphilius Cryptobullatus | Siluriformes | Freshwater (Africa) | Amphilius cryptobullatus |
| Amphilophus | Perciformes | Freshwater | Amphilophus |
| Amphilophus Labiatus | Cichliformes | Freshwater (Central America) | Parachromis labiatus |
| Amphioxus | Amphioxiformes | Marine; Sandy Substrates | Branchiostoma Lanceolatum |
| Amphipnous | Synbranchiformes | Freshwater swamps and rice paddies of South Asia | Amphipnous cuchia |
| Amphiprion | Perciformes | Indo-Pacific coral reefs (Clownfish) | Amphiprion ocellaris |
| Amphiprion Akallopisos | Perciformes | Marine (Indian Ocean) | Amphiprion akallopisos |
| Amphiprion Bicinctus | Perciformes | Marine (Red Sea) | Amphiprion bicinctus |
| Amphiprion Clarkii | Perciformes | Marine (Indo-Pacific) | Amphiprion clarkii |
| Amphiprion Ephippium | Perciformes | Marine (Indo-Pacific) | Amphiprion ephippium |
| Amphiprion Frenatus | Perciformes | Marine (Pacific) | Amphiprion frenatus |
| Amphiprion Latezonatus | Perciformes | Marine (Australia) | Amphiprion latezonatus |
| Amphiprion Percula | Perciformes | Marine (Western Pacific) | Amphiprion percula |
| Amphiprion Perideraion | Perciformes | Marine (Indo-Pacific) | Amphiprion perideraion |
| Amphiprion Polymnus | Perciformes | Marine (Western Pacific) | Amphiprion polymnus |
| Amphiprion Sandaracinos | Perciformes | Marine (Indo-Pacific) | Amphiprion sandaracinos |
| Amphiprion clarkii | Perciformes | Indo-Pacific coral reefs (Clark's Anemonefish) | Amphiprion clarkii |
| Amphiprion frenatus | Perciformes | Western Pacific coral reefs (Tomato Clownfish) | Amphiprion frenatus |
| Amphiprion percula | Perciformes | Western Pacific coral reefs (Percula Clownfish) | Amphiprion percula |
| Amphiprioninae | Perciformes | Marine (Subfamily of Clownfish) | Amphiprioninae |
| Amphipterus | Perciformes | Fossil | Amphipterus |
| Amphipterygium | Anguilliformes | Ancient marine environments (extinct) | Amphipterygium |
| Amphistichus | Perciformes | Marine | Amphistichus |
| Amphistium | Paracanthopterygii | Ancient marine environments (extinct) | Amphistium |
| Amur Carp | Cypriniformes | Freshwater (Asia) | Cyprinus carpio haematopterus |
| Amur Pike | Esociformes | Freshwater | Esox reichertii |
| Amur Sturgeon | Acipenseriformes | Freshwater/Brackish | Acipenser schrenckii |
| Anabas | Anabantiformes | Freshwater ponds and swamps of Asia | Anabas testudineus |
| Anabas Testudineus | Anabantiformes | Freshwater/Brackish (Asia) | Anabas testudineus |
| Anabas cobojius | Anabantiformes | Freshwater ponds and swamps of Asia | Anabas cobojius |
| Anabas testudineus | Anabantiformes | Freshwater ponds and swamps of Asia | Anabas testudineus |
| Anablepidae | Cyprinodontiformes | Brackish and marine waters of Central and South America | Anableps anableps |
| Anableps | Cyprinodontiformes | Freshwater/Brackish | Anableps anableps |
| Anableps anableps | Cyprinodontiformes | Brackish and marine waters of Central and South America | Anableps anableps |
| Anableps dowei | Cyprinodontiformes | Brackish and marine waters of Central America | Anableps dowei |
| Anableps microlepis | Cyprinodontiformes | Brackish and marine waters of Central and South America | Anableps microlepis |
| Anacanthini | Gadiformes | Marine | Anacanthini |
| Anacanthobatis | Rajiformes | Atlantic Ocean (skate) | Anacanthobatis stenosoma |
| Anacanthobatis longirostris | Rajiformes | Atlantic Ocean (skate) | Anacanthobatis longirostris |
| Anacanthobatis stenosoma | Rajiformes | Atlantic Ocean (skate) | Anacanthobatis stenosoma |
| Anacanthus | Tetraodontiformes | Indo-Pacific (filefish) | Anacanthus barbatus |
| Anacanthus barbatus | Tetraodontiformes | Indo-Pacific (filefish) | Anacanthus barbatus |
| Anacypris | Cypriniformes | Freshwater rivers of Turkey | Anacypris merus |
| Anacypris merus | Cypriniformes | Freshwater rivers of Turkey | Anacypris merus |
| Anadolu Barb | Cypriniformes | Freshwater; Rivers | Barbus Anadoluensis |
| Anaecypris | Cypriniformes | Freshwater | Anaecypris |
| Anago | Anguilliformes | Marine | Conger myriaster |
| Anambra Barb | Cypriniformes | Freshwater (Nigeria) | Barbus anambraensis |
| Anampses | Labriformes | Indo-Pacific coral reefs (Wrasse) | Anampses twistii |
| Anampses Caudalineatus | Perciformes | Marine (Indo-Pacific) | Anampses caudalineatus |
| Anampses Lyratus | Perciformes | Marine (Indo-Pacific) | Anampses lyratus |
| Anampses Meleagrides | Perciformes | Marine (Indo-Pacific) | Anampses meleagrides |
| Anampses Twistii | Perciformes | Marine (Indo-Pacific) | Anampses twistii |
| Anampses geographicus | Labriformes | Indo-Pacific coral reefs (Wrasse) | Anampses geographicus |
| Anampses neoguinaicus | Labriformes | Western Pacific coral reefs (Wrasse) | Anampses neoguinaicus |
| Anampses twistii | Labriformes | Indo-Pacific coral reefs (Wrasse) | Anampses twistii |
| Ananta's Catfish | Siluriformes | Freshwater; Rivers | Mystus Ananta |
| Anarchy Batfish | Ephippiformes | Marine | Platypus guinaicus |
| Anarhichadidae | Perciformes | North Atlantic and Pacific (Wolffishes) | Anarhichadidae |
| Anarhichas | Perciformes | North Atlantic and Pacific (Wolffishes) | Anarhichas lupus |
| Anarhichas denticulatus | Perciformes | North Atlantic (Northern Wolffish) | Anarhichas denticulatus |
| Anarhichas lupus | Perciformes | North Atlantic and Pacific (Atlantic Wolffish) | Anarhichas lupus |
| Anarhichas minor | Perciformes | North Atlantic (Spotted Wolffish) | Anarhichas minor |
| Anarhichas orientalis | Perciformes | North Pacific (Bering Wolffish) | Anarhichas orientalis |
| Anchialine Cave Goby | Gobiiformes | Marine (Caves) | Akko nomurai |
| Anchoa | Clupeiformes | Marine | Anchoa |
| Anchoa Hepsetus | Clupeiformes | Marine (Atlantic) | Anchoa hepsetus |
| Anchoa Mitchilli | Clupeiformes | Marine (Atlantic) | Anchoa mitchilli |
| Anchoveta | Clupeiformes | Marine (Pacific) | Engraulis ringens |
| Anchovy | Clupeiformes | Marine | Engraulidae |
| Anchovy Herring | Clupeiformes | Marine; Pelagic | Clupea Harengus Membras |
| Anchovy Pearly | Perciformes | Marine; Commensal | Encheliophis Hottentota |
| Ancistrus | Siluriformes | Freshwater | Ancistrus |
| Ancylopsetta | Pleuronectiformes | Marine | Ancylopsetta |
| Andaman Batfish | Perciformes | Marine; Coral Reefs | Platax Teira |
| Andaman Demoiselle | Perciformes | Marine (Andaman Sea) | Neoglyphidodon melas |
| Andaman Moray | Anguilliformes | Marine; Coral Reefs | Gymnothorax Andamanicus |
| Andaman Whiptail | Perciformes | Marine; Coral Reefs | Pentapodus Andamanensis |
| Andamia | Perciformes | Marine | Andamia |
| Andamia Heteroptera | Perciformes | Marine (Indo-Pacific) | Andamia heteroptera |
| Andean Catfish | Siluriformes | Freshwater | Trichomycterus rivulatus |
| Andean Catfish (Trichomycteridae) | Siluriformes | Freshwater (Andes) | Trichomycteridae |
| Andean Killifish | Cyprinodontiformes | Freshwater | Orestias luteus |
| Anderson's Catshark | Carcharhiniformes | Marine; Deepwater | Pristiurus Andersoni |
| Andersonia | Siluriformes | Freshwater | Andersonia |
| Andes Killifish | Cyprinodontiformes | Freshwater (Andes) | Orestias luteus |
| Andinoacara Rivulatus | Cichliformes | Freshwater (South America) | Andinoacara rivulatus |
| Andrew's Cardinalfish | Perciformes | Marine; Coral Reefs | Apogon Andrewsii |
| Andrias Davidianus | Urodela | Freshwater (Asia) | Andrias davidianus |
| Andrias japonicus | Urodela | Freshwater (Japan) | Andrias japonicus |
| Anemonefish | Perciformes | Marine | Amphiprioninae |
| Angel Shark | Squatiniformes | Marine (Atlantic) | Squatina squatina |
| Angelfish | Cichliformes | Freshwater | Pterophyllum scalare |
| Angelfish (Freshwater) | Cichliformes | Freshwater (Amazon Basin) | Pterophyllum scalare |
| Angelfish (freshwater) | Perciformes | Freshwater | Pterophyllum |
| Angelfish (marine) | Perciformes | Marine | Pomacanthidae (various genera) |
| Anglefish (Marine) | Perciformes | Marine | Pomacanthidae |
| Angler Catfish | Siluriformes | Freshwater (Asia) | Chaca chaca |
| Angler Fish (Deep Sea) | Lophiiformes | Deep Sea | Ceratiidae |
| Angler Sea Devil | Lophiiformes | Marine | Ceratias holboelli |
| Anglerfish | Lophiiformes | Marine | Lophiidae |
| Anglerfish (Ceratias) | Anglerfish | Marine (Deep Sea) | Ceratias |
| Anglerfish (Lophius) | Lophiiformes | Marine | Lophius |
| Angolan Barb | Cypriniformes | Freshwater (Angola) | Barbus holotaenia |
| Anguilla | Anguilliformes | Freshwater/Brackish/Marine | Anguilla |
| Anguilla anguilla | Anguilliformes | Freshwater/Marine (Europe) | Anguilla anguilla |
| Anguilla japonica | Anguilliformes | Freshwater/Marine (East Asia) | Anguilla japonica |
| Anguilliformes | Anguilliformes | Marine/Freshwater (Order of Eels) | Anguilliformes |
| Angular Rough Shark | Squaliformes | Marine (Atlantic) | Oxynotus centrina |
| Angular Roughshark | Squaliformes | Marine; Deepwater | Oxynotus Centrina |
| Angulas (Baby Eel) | Anguilliformes | Freshwater/Brackish | Anguilla anguilla (juvenile) |
| Anisochromis | Perciformes | Marine | Anisochromis |
| Anisotremus | Perciformes | Marine | Anisotremus |
| Anisotremus Virginicus | Perciformes | Marine (Atlantic) | Anisotremus virginicus |
| Anomalops | Beryciformes | Marine | Anomalops katoptron |
| Anomalops Katoptron | Beryciformes | Marine (Pacific) | Anomalops katoptron |
| Anomalopterus | Anomalopteriformes | Fossil | Anomalopterus |
| Anomalopterus Fasciculatus | Perciformes | Marine; Deepwater | Anomalopterus Fasciculatus |
| Anoplagonus Inermis | Scorpaeniformes | Marine; Deepwater | Anoplagonus Inermis |
| Anoplogaster | Stephanoberyciformes | Marine | Anoplogaster |
| Anoplogaster Cornuta | Stomiiformes | Marine (Deep Sea) | Anoplogaster cornuta |
| Anoplopoma Fimbria | Scorpaeniformes | Marine; Deepwater | Anoplopoma Fimbria |
| Anoptichthys | Characiformes | Freshwater (Cavefish) | Anoptichthys jordani |
| Anostomidae | Characiformes | Freshwater | Anostomidae |
| Anostomus | Characiformes | Freshwater | Anostomus |
| Anostomus Anostomus | Characiformes | Freshwater (South America) | Anostomus anostomus |
| Antarctic Cod | Nototheniiformes | Marine; Pelagic | Dissostichus Mawsoni |
| Antarctic Dragonfish | Perciformes | Marine; Deep Seaa | Parachaenichthys Charcoti |
| Antarctic Icefish | Nototheniiformes | Marine; Deep Sea | Chionodraco Hamatus |
| Antarctic Lanternfish | Myctophiformes | Marine; Deep Sea | Gymnoscopelus Nichol |
| Antarctic Silverfish | Notothenioidei | Marine (Antarctic) | Pleuragramma antarctica |
| Antarctic Toothfish | Perciformes | Marine | Dissostichus mawsoni |
| Antarctica Sunfish | Tetraodontiformes | Marine; Pelagic | Mola Mola |
| Antenna Ray | Myliobatiformes | Marine (Atlantic) | Dasyatis pastinaca |
| Antennablennius | Perciformes | Marine | Antennablennius |
| Antennarius | Lophiiformes | Marine | Antennarius |
| Antennarius Commerson | Lophiiformes | Marine (Indo-Pacific) | Antennarius commerson |
| Antennarius Maculatus | Lophiiformes | Marine (Indo-Pacific) | Antennarius maculatus |
| Antennarius Pictus | Lophiiformes | Marine (Indo-Pacific) | Antennarius pictus |
| Antennarius Striatus | Lophiiformes | Marine (Indo-Pacific) | Antennarius striatus |
| Antennata | Lophiiformes | Marine (extinct) | Antennata |
| Antherinops | Atheriniformes | Marine | Antherinops |
| Anthias | Perciformes | Marine | Anthias |
| Anticora's Damselfish | Perciformes | Marine; Coral Reefs | Chromis Anticora |
| Antigonia Aurorosea | Perciformes | Marine | Antigonia aurorosea |
| Antigonia Capros | Perciformes | Marine | Antigonia capros |
| Antigonia Raja | Perciformes | Marine | Antigonia raja |
| Antilles Goatee | Perciformes | Marine; Coral Reefs | Pseudupeneus Maculatus |
| Antilles Grouper | Perciformes | Marine; Coral Reefs | Mycteroperca Venenosa |
| Antilocha | Siluriformes | Freshwater | Antilophus macrophthalmus |
| Antimora Rostrata | Gadiformes | Marine (Deep Sea) | Antimora rostrata |
| Antipodean Sawshark | Pristiophoriformes | Marine | Pristiophorus nudipinnis |
| Antipodean Slopefish | Argentiniformes | Marine; Deepwater | Nansenia Antipoda |
| Antipodocottus | Scorpaeniformes | Marine | Antipodocottus |
| Antropicum | Cypriniformes | Freshwater (extinct) | Antropicum |
| Anyperodon | Perciformes | Marine | Anyperodon leucogrammicus |
| Aonaga-ginpo | Perciformes | Marine; Sandy Bottom | Pteropsaron Incisum |
| Aonori-iso-haze | Perciformes | Marine; Coral Reefs | Gobiodon Reticulatus |
| Apache Killifish | Cyprinodontiformes | Freshwater; Springs | Cyprinodon Apaches |
| Aparodus | Aparodiformes | Fossil | Aparodus |
| Aphanius Dispar | Cyprinodontiformes | Freshwater/Brackish (Middle East) | Aphanius dispar |
| Aphanius Iberus | Cyprinodontiformes | Freshwater/Brackish (Mediterranean) | Aphanius iberus |
| Apistogramma Agassizii | Perciformes | Freshwater; Rivers | Apistogramma Agassizii |
| Apistogramma Agassizii Fire Red | Cichliformes | Freshwater (South America – Cultivar) | Apistogramma agassizii |
| Apistogramma Borellii | Cichliformes | Freshwater (South America) | Apistogramma borellii |
| Apistogramma Cacatuoides | Cichliformes | Freshwater (South America) | Apistogramma cacatuoides |
| Apistogramma trifasciata | Cichliformes | Freshwater (South America) | Apistogramma trifasciata |
| Apistogramma viejita | Cichliformes | Freshwater (South America) | Apistogramma viejita |
| Aplocheilichthys Orlando | Cyprinodontiformes | Freshwater (Africa) | Aplocheilichthys orlando |
| Aplocheilus Lineatus | Cyprinodontiformes | Freshwater (Asia) | Aplocheilus lineatus |
| Aplocheilus Panakkar | Cyprinodontiformes | Freshwater (Asia) | Aplocheilus panakkar |
| Aplodactylus Arctidens | Perciformes | Marine (Australia) | Aplodactylus arctidens |
| Aplodactylus Etheridgii | Perciformes | Marine (Australia) | Aplodactylus etheridgii |
| Aplodactylus Fissidens | Perciformes | Marine (Australia) | Aplodactylus fissidens |
| Aplodactylus Obscurus | Perciformes | Marine (Australia) | Aplodactylus obscurus |
| Apogon Nigripinnis | Perciformes | Marine; Coral Reefs | Apogon Nigripinnis |
| Apogon Semiornatus | Perciformes | Marine; Coral Reefs | Apogon Semiornatus |
| Apristurus | Carcharhiniformes | Marine (Deep Sea Sharks) | Apristurus |
| Arabian Angelfish | Perciformes | Marine; Coral Reefs | Pomacanthus Asfur |
| Arabian Blue Tang | Perciformes | Marine; Coral Reefs | Acanthurus Sohal |
| Arabian Bluegill | Perciformes | Marine | Cynoscion regalis |
| Arabian Chromis | Perciformes | Marine; Coral Reefs | Chromis Cinerascens |
| Arabian Dottyback | Perciformes | Marine; Coral Reefs | Pseudochromis Dianneae |
| Arabian Hamlet | Perciformes | Marine; Coral Reefs | Hypoplectrus Floridaris |
| Arabian Leopard Ray | Rajiformes | Marine; Coastal | Pastinachus Sephen |
| Arabian Mojarra | Perciformes | Marine; Estuarine | Gerres Oryzae |
| Arabian Picasso Triggerfish | Tetraodontiformes | Marine; Coral Reefs | Rhinecanthus Assasi |
| Arabian Picassofish | Tetraodontiformes | Marine; Coral Reefs | Rhinecanthus Assasi |
| Arabian Rainbowfish | Atheriniformes | Freshwater; Streams | Melanotaenia Praecox |
| Arabian Sea Catshark | Carcharhiniformes | Marine; Deepwater | Apristurus Longicephalus |
| Arabian Shark | Carcharhiniformes | Marine; Coastal | Carcharhinus Obesus |
| Arabian Surgeonfish | Perciformes | Marine; Coral Reefs | Acanthurus Sohal |
| Arabian Toadfish | Batrachoidiformes | Marine; Benthic | Halobatrachus Didactylus |
| Arabian Whipray | Myliobatiformes | Marine; Coastal | Himantura Uarnak |
| Arafura Filefish | Tetraodontiformes | Marine; Coastal | Aracana Aurita |
| Arafura Shovelnose Ray | Rajiformes | Marine; Benthic | Rhina Anclystoma |
| Arapaima | Osteoglossiformes | Freshwater | Arapaima gigas |
| Arc-eye Hawkfish | Perciformes | Marine; Coral Reefs | Paracirrhites Arcatus |
| Archerfish | Perciformes | Brackish/Freshwater | Toxotes jaculatrix |
| Arctic Char | Salmoniformes | Freshwater/Marine | Salvelinus alpinus |
| Arctic Cod | Gadiformes | Marine (Arctic) | Boreogadus saida |
| Arctic Flounder | Pleuronectiformes | Marine | Pleuronectes glacialis |
| Arctic Grayling | Salmoniformes | Freshwater | Thymallus arcticus |
| Arctic Lamprey | Petromyzontiformes | Freshwater/Marine | Lethenteron camtschaticum |
| Arctic Sculpin | Scorpaeniformes | Marine; Benthic | Myoxocephalus Scolopax |
| Arctic Skate | Rajiformes | Marine | Amblyraja hyperborea |
| Arctic Staghorn Sculpin | Cottiformes | Marine | Gymnocanthus tricuspis |
| Arctozenus Rissoi | Osmeriformes | Marine; Deepwater | Arctozenus Rissoi |
| Arenaria Goby | Perciformes | Marine; Estuarine | Acanthogobius Flavimanus |
| Argentine Hake | Gadiformes | Marine; Deepwater | Merluccius Hubbsi |
| Argentine Pearlfish | Ophidiiformes | Marine; Commensal | Carapus bermudensis |
| Argus Butterflyfish | Perciformes | Marine; Coral Reefs | Chaetodon Speculum |
| Argus Grouper | Perciformes | Marine; Coral Reefs | Cephalopholis Argus |
| Ariid Catfish | Siluriformes | Marine/Brackish (Catfish Family) | Ariidae |
| Arizona Killifish | Cyprinodontiformes | Freshwater (Arizona) | Poeciliopsis occidentalis |
| Arkansas Shiner | Cypriniformes | Freshwater (Arkansas) | Notropis girardi |
| Armadillo Lizardfish | Aulopiformes | Marine; Benthic | Synodus Lucanus |
| Armored Catfish | Siluriformes | Freshwater | Loricariidae |
| Armored Gurnard | Perciformes | Marine | Dactylopteridae |
| Armored Scad | Carangiformes | Marine | Microcanthus strigatus |
| Armored Searobin | Perciformes | Marine | Peristedion |
| Armoured Catfish | Siluriformes | Freshwater | Loricariidae |
| Arnoul's Silverside | Atheriniformes | Marine; Coastal | Atherinomorus Lacunosus |
| Arowana | Osteoglossiformes | Freshwater | Osteoglossidae |
| Arrow Goby | Gobiiformes | Marine | Clevelandia ios |
| Arrowfish | Perciformes | Marine | Parasudis truculenta |
| Arrowhead Goby | Gobiiformes | Marine (Pacific Coast North America) | Clevelandia ios |
| Arrowhead Sculpin | Cottiformes | Marine | Artedius notospilotus |
| Arrowtooth Flounder | Pleuronectiformes | Marine | Atheresthes stomias |
| Artemia Shrimp | Anostraca | Brackish; Saline Lakes | Artemia Salina |
| Articulating Lizardfish | Aulopiformes | Marine; Benthic | Synodus Articulatus |
| Asagi Butterflyfish | Perciformes | Marine; Coral Reefs | Chaetodon Asfur |
| Ascanius' Goby | Perciformes | Marine; Estuarine | Gobius Cobitis |
| Ascension Moray | Anguilliformes | Marine | Gymnothorax ascensionis |
| Ash-colored Sea Catfish | Siluriformes | Marine; Estuarine | Arius Thoracata |
| Ashy Sculpin | Scorpaeniformes | Freshwater | Cottus asperrimus |
| Asian Arowana | Osteoglossiformes | Freshwater | Scleropages formosus |
| Asian Catfish (Silurus) | Siluriformes | Freshwater (Asia) | Silurus asotus |
| Asian Climber | Anabantiformes | Freshwater (Asia) | Anabas testudineus |
| Asian Confused Loach | Cypriniformes | Freshwater (Asia) | Sinibotia robusta |
| Asian Datnoid | Perciformes | Freshwater/Brackish (Asia) | Datnioides microlepis |
| Asian Green Catfish | Siluriformes | Freshwater (Asia) | Pachypterus |
| Asian Pike | Esociformes | Freshwater (Asia) | Esox lucius |
| Asian Redtail Catfish | Siluriformes | Freshwater; Rivers | Phractocephalus Hemioliopterus |
| Asian Rummy Nose | Characiformes | Freshwater (Asia) | Sawbwa resplendens |
| Asian Sheatfish | Siluriformes | Freshwater (Asia) | Walaya attu |
| Asian Spiny Eel | Synbranchiformes | Freshwater (Asia) | Macrognathus |
| Asian Threadfin | Polynemiformes | Marine; Coastal | Polydactylus Sexfilis |
| Asian Wolf Eel | Zoarciformes | Marine; Deepwater | Lycichthys Denticulatus |
| Asiatic Glassfish | Perciformes | Freshwater/Brackish (Asia) | Parambassis ranga |
| Asiatic Knifefish | Notopteriformes | Freshwater (Asia) | Notopterus notopterus |
| Asiopsaridae | Perciformes | Marine; Deepwater | Asiopsaridae |
| Asp | Cypriniformes | Freshwater (Europe/Asia) | Aspius aspius |
| Aspidoparia Morar | Cypriniformes | Freshwater; Rivers | Aspidoparia Morar |
| Assasin Pike | Perciformes | Freshwater; Rivers | Crenicichla Acutirostris |
| Assassinfish | Perciformes | Marine | Cynoscion spp. |
| Assessor | Perciformes | Marine (Australia) | Assessor macneilli |
| Asterropteryx Semipunctata | Perciformes | Marine; Coral Reefs | Asterropteryx Semipunctata |
| Astyanax Fasciatus | Characiformes | Freshwater; Rivers | Astyanax Fasciatus |
| Asymmetric Jawfish | Perciformes | Marine; Coral Reefs | Opistognathus Anaglyptus |
| Athena's Killifish | Cyprinodontiformes | Freshwater; Temporary Pools | Nothobranchius Athana |
| Atherinella | Atheriniformes | Marine/Brackish/Freshwater (Americas) | Atherinella |
| Atka Mackerel | Scorpaeniformes | Marine (North Pacific) | Pleurogrammus monopterygius |
| Atlantic Anglerfish | Lophiiformes | Marine; Benthic | Lophius Pisces |
| Atlantic Argentine | Argentiniformes | Marine; Deepwater | Argentina Silus |
| Atlantic Bananafish | Albuliformes | Marine; Coastal | Albula Vulpes |
| Atlantic Barracuda | Perciformes | Marine; Coastal | Sphyraena Argentea |
| Atlantic Batfish | Lophiiformes | Marine; Benthic | Ogcocephalus Vespertilio |
| Atlantic Bigeye | Perciformes | Marine; Coastal | Priacanthus Arenatus |
| Atlantic Black Skipjack | Scombriformes | Marine; Pelagic | Euthynnus Alletteratus |
| Atlantic Blue Marlin | Perciformes | Marine; Pelagic | Makaira Nigricans |
| Atlantic Bluefin Tuna | Scombriformes | Marine | Thunnus thynnus |
| Atlantic Bonito | Scombriformes | Marine | Sarda sarda |
| Atlantic Boxfish | Tetraodontiformes | Marine; Coral Reefs | Lactophrys Trigona |
| Atlantic Bumper | Carangiformes | Marine | Chloroscombrus chrysurus |
| Atlantic Butterfish | Perciformes | Marine | Peprilus triacanthus |
| Atlantic Cod | Gadiformes | Marine | Gadus morhua |
| Atlantic Codlet | Gadiformes | Marine | Gadus luscus |
| Atlantic Croaker | Perciformes | Marine | Micropogonias undulatus |
| Atlantic Cusk-eel | Ophidiiformes | Marine; Benthic | Ophidion Holbrookii |
| Atlantic Cutlassfish | Scombriformes | Marine | Trichiurus lepturus |
| Atlantic Damselfish | Perciformes | Marine; Coral Reefs | Pomacentrus Leucostictus |
| Atlantic Deep-water Houndshark | Carcharhiniformes | Marine; Deepwater | Iago Omanensis |
| Atlantic Deepsea Angler | Lophiiformes | Marine; Deep Sea | Melanocetus Johnsonii |
| Atlantic Dolphin | Perciformes | Marine; Pelagic | Coryphaena Hippurus |
| Atlantic Draconette | Perciformes | Marine; Benthic | Callionymus Dracunculus |
| Atlantic Eagle Ray | Myliobatiformes | Marine; Coastal | Myliobatis Aquila |
| Atlantic Flatfish | Pleuronectiformes | Marine | Pleuronectes platessa |
| Atlantic Flyingfish | Beloniformes | Marine | Cheilopogon melanurus |
| Atlantic Footballfish | Lophiiformes | Marine; Deep Sea | Himantolophus Cornifer |
| Atlantic Four-eye Butterflyfish | Perciformes | Marine; Coral Reefs | Chaetodon Capistratus |
| Atlantic Goatfish | Perciformes | Marine; Benthic | Mullus Auratus |
| Atlantic Goliath Grouper | Perciformes | Marine | Epinephelus itajara |
| Atlantic Green Moray | Anguilliformes | Marine; Reefs | Gymnothorax Funebris |
| Atlantic Grenadier | Gadiformes | Deep Sea | Macrourus berglax |
| Atlantic Grunt | Perciformes | Marine | Haemulon striatum |
| Atlantic Gurard | Scorpaeniformes | Marine; Benthic | Prionotus Caroli |
| Atlantic Hagfish | Myxiniformes | Marine | Myxine glutinosa |
| Atlantic Halibut | Pleuronectiformes | Marine (North Atlantic) | Hippoglossus hippoglossus |
| Atlantic Herring | Clupeiformes | Marine | Clupea harengus |
| Atlantic Horse Mackerel | Perciformes | Marine; Pelagic | Trachurus Trachurus |
| Atlantic Houndfish | Beloniformes | Marine; Pelagic | Tylosurus Crocodilus |
| Atlantic King Mackerel | Scombriformes | Marine; Coastal | Scomberomorus Cavalla |
| Atlantic Lancetfish | Aulopiformes | Marine; Pelagic | Alepisaurus Ferox |
| Atlantic Lizardfish | Aulopiformes | Marine | Synodus saurus |
| Atlantic Mackerel | Scombriformes | Marine | Scomber scombrus |
| Atlantic Menhaden | Clupeiformes | Marine | Brevoortia tyrannus |
| Atlantic Midshipman | Batrachoidiformes | Marine | Porichthys plectrodon |
| Atlantic Moonfish | Perciformes | Marine | Selene setapinnis |
| Atlantic Needlefish | Beloniformes | Marine/Brackish | Strongylura marina |
| Atlantic Ocean Perch | Scorpaeniformes | Marine; Deepwater | Sebastes Marinus |
| Atlantic Onefin Sculpin | Scorpaeniformes | Marine; Deepwater | Psychrolutes Marmoratus |
| Atlantic Parrotfish | Perciformes | Marine; Coral Reefs | Sparisoma Viride |
| Atlantic Pearlfish | Ophidiiformes | Marine; Commensal | Encheliophis Hottentota |
| Atlantic Pearlside | Stomiiformes | Marine | Maurolicus muelleri |
| Atlantic Pelagic Stingray | Myliobatiformes | Marine; Pelagic | Dasyatis Violacea |
| Atlantic Pomfret | Scombriformes | Marine | Brama brama |
| Atlantic Pompano | Perciformes | Marine; Coastal | Trachinotus Carolinus |
| Atlantic Porcupinefish | Tetraodontiformes | Marine; Coral Reefs | Diodon Hystrix |
| Atlantic Princess | Perciformes | Marine; Coral Reefs | Gramma Loretto |
| Atlantic Puffin | Perciformes | Freshwater (North America) | Perca flavescens |
| Atlantic Red Hake | Gadiformes | Marine | Urophycis chuss |
| Atlantic Red Snapper | Perciformes | Marine | Lutjanus campechanus |
| Atlantic Sailfish | Istiophoriformes | Marine | Istiophorus platypterus |
| Atlantic Salmon | Salmoniformes | Freshwater/Marine | Salmo salar |
| Atlantic Sand Lance | Ammodytiformes | Marine; Sandy Benthic | Ammodytes Dubius |
| Atlantic Sanddab | Pleuronectiformes | Marine | Hippoglossoides platessoides |
| Atlantic Sawshark | Pristiophoriformes | Marine; Deepwater | Pristiophorus Schroderi |
| Atlantic Scabbardfish | Perciformes | Marine; Deepwater | Lepidopus Caudatus |
| Atlantic Serpent Eel | Anguilliformes | Marine | Ophichthus punctifer |
| Atlantic Sharpnose Shark | Carcharhiniformes | Marine | Rhizoprionodon terraenovae |
| Atlantic Silverside | Atheriniformes | Marine | Menidia menidia |
| Atlantic Silverside (Menidia) | Atheriniformes | Marine | Menidia menidia |
| Atlantic Smelt | Osmeriformes | Marine | Osmerus mordax |
| Atlantic Spadefish | Perciformes | Marine | Chaetodipterus faber |
| Atlantic Spadefish (Chaetodipterus) | Ephippiformes | Marine | Chaetodipterus faber |
| Atlantic Spanish Mackerel | Scombriformes | Marine; Coastal | Scomberomorus Maculatus |
| Atlantic Spiny Dogfish | Squaliformes | Marine | Squalus acanthias |
| Atlantic Spotted Dolphin | Perciformes | Marine; Pelagic | Stenella Frontalis |
| Atlantic Sturgeon | Acipenseriformes | Freshwater/Marine | Acipenser oxyrinchus oxyrinchus |
| Atlantic Threadfin | Polynemiformes | Marine | Polydactylus octonemus |
| Atlantic Torpedo | Torpediniformes | Marine | Torpedo nobiliana |
| Atlantic Torpedo Ray | Torpediniformes | Marine; Benthic | Torpedo Nobiliana |
| Atlantic Trumpetfish | Syngnathiformes | Marine; Reefs | Aulostomus Maculatus |
| Atlantic Tuna | Scombriformes | Marine; Pelagic | Thunnus Thynnus |
| Atlantic Viperfish | Stomiiformes | Marine; Deep Sea | Chauliodus Sloani |
| Atlantic Wahoo | Scombriformes | Marine | Acanthocybium solandri |
| Atlantic White Marlin | Perciformes | Marine; Pelagic | Kajikia Albida |
| Atlantic Wolffish | Perciformes | Marine | Anarhichas lupus |
| Atlantic Wreckfish | Perciformes | Marine | Polyprion americanus |
| Atlantic Yellowfin Tuna | Scombriformes | Marine; Pelagic | Thunnus Albacares |
| Atlantis Shark | Carcharhiniformes | Marine; Coastal | Carcharhinus Perezi |
| Atomus Skilfish | Scorpaeniformes | Marine; Deepwater | Anoplopoma Fimbria |
| Attenborough's Spiny Eel | Synbranchiformes | Freshwater (Sri Lanka) | Macrognathus attenboroughi |
| Attenuated Snake Eel | Anguilliformes | Marine; Benthic | Pisodonophis Attenuatus |
| Aubry's Cardinalfish | Perciformes | Marine; Coral Reefs | Apogon Aubryi |
| Auchenoglanis | Siluriformes | Freshwater (Africa) | Auchenoglanis |
| Audet's Flathead | Scorpaeniformes | Marine; Benthic | Platycephalus Audeti |
| Augusta's Goby | Perciformes | Marine; Sandy Bottom | Myersina Augusta |
| Aulohalaelurus | Carcharhiniformes | Marine (Indo-Pacific) | Aulohalaelurus |
| Aulopidae | Aulopiformes | Marine | Aulopus filamentosus |
| Aulostomus | Syngnathiformes | Marine (Tropical/Subtropical) | Aulostomus |
| Australian Lungfish | Ceratodontiformes | Freshwater | Neoceratodus forsteri |
| Australian Spotted Handfish | Lophiiformes | Marine | Brachionichthys hirsutus |
| Auxis | Scombriformes | Marine (Worldwide) | Auxis |
| Avocet Snipe Eel | Anguilliformes | Deep Sea | Nemichthys scolopaceus |
| Awaous Fluvialis | Perciformes | Freshwater; Rivers | Awaous Fluvialis |
| Axillary Searobin | Scorpaeniformes | Marine; Benthic | Prionotus Axillaris |
| Axilspot Hogfish | Perciformes | Marine; Coral Reefs | Bodianus Axillaris |
| Axilspot Wrasse | Perciformes | Marine; Coral Reefs | Bodianus Axillaris |
| Axolotl | Urodela | Freshwater | Ambystoma mexicanum |
| Ayliffe's Tang | Perciformes | Marine; Coral Reefs | Acanthurus Ayliffei |
| Ayre's Triggerfish | Tetraodontiformes | Marine; Coral Reefs | Sufflamen Fraenatum |
| Ayu | Osmeriformes | Freshwater/Marine (East Asia) | Plecoglossus altivelis |
| Azalea Wrasse | Perciformes | Marine; Coral Reefs | Halichoeres Trispilus |
| Aztec Dwarf Cichlid | Perciformes | Freshwater; Rivers | Apistogramma Aztecum |