There are 546 fish that start with the letter B, from Backwater Killifish to Bytez Goby. 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: Backwater Killifish
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Fundulus nottii
Name: Bahama Starfish Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Asterropteryx striata
Name: Baikal Oilfish
Order: Scorpaeniformes
Habitat: Freshwater
Scientific name: Comephorus baicalensis
Name: Bailer
Order: Gastropoda
Habitat: Marine shallow waters of the Indo-Pacific
Scientific name: Melo melo
Name: Bairdiella
Order: Perciformes
Habitat: Marine
Scientific name: Bairdiella icistia
Name: Bala Shark
Order: Cypriniformes
Habitat: Freshwater rivers and streams in Southeast Asia
Scientific name: Balantiocheilos melanopterus
Name: Balac
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Puntius binotatus
Name: Baleen Whale
Order: Cetacea
Habitat: Marine
Scientific name: Mysticeti (suborder)
Name: Ballan Wrasse
Order: Perciformes
Habitat: Marine rocky shores and kelp beds in the Northeast Atlantic
Scientific name: Labrus bergylta
Name: Ballyhoo
Order: Beloniformes
Habitat: Marine
Scientific name: Hemiramphus brasiliensis
Name: Balon's Perch
Order: Perciformes
Habitat: Freshwater
Scientific name: Gymnocephalus baloni
Name: Bambara
Order: Characiformes
Habitat: Freshwater
Scientific name: Hydrocynus brevis
Name: Bamboo Shark
Order: Orectolobiformes
Habitat: Marine tropical and subtropical waters of the Indo-Pacific
Scientific name: Chiloscyllium punctatum
Name: Bambusea
Order: Lamniformes
Habitat: Marine
Scientific name: Chiloscyllium punctatum
Name: Banded Archerfish
Order: Perciformes
Habitat: Brackish
Scientific name: Toxotes jaculatrix
Name: Banded Butterflyfish
Order: Perciformes
Habitat: Saltwater
Scientific name: Chaetodon striatus
Name: Banded Gourami
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Trichogaster fasciata
Name: Banded Killifish
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Fundulus diaphanus
Name: Banded Knifefish
Order: Gymnotiformes
Habitat: Freshwater
Scientific name: Gymnotus carapo
Name: Banded Kory
Order: Siluriformes
Habitat: Freshwater rivers and streams in South America
Scientific name: Corydoras schultzei
Name: Banded Leporinus
Order: Characiformes
Habitat: Freshwater
Scientific name: Leporinus fasciatus
Name: Banded Loach
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Botia kubotai
Name: Banded Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax isingteena
Name: Banded Morwong
Order: Perciformes
Habitat: Marine temperate waters of Australia
Scientific name: Cheilodactylus spectabilis
Name: Banded Pangasius
Order: Siluriformes
Habitat: Freshwater
Scientific name: Pangasius polyuranodon
Name: Banded Peacock Bass
Order: Cichliformes
Habitat: Freshwater
Scientific name: Cichla pleiozona
Name: Banded Peacock Cichlid
Order: Perciformes
Habitat: Freshwater
Scientific name: Aulonocara stuartgranti
Name: Banded Pencilfish
Order: Characiformes
Habitat: Freshwater
Scientific name: Nannostomus espei
Name: Banded Pipefish
Order: Syngnathiformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Dunckerocampus dactyliophorus
Name: Banded Rainbowfish
Order: Atheriniformes
Habitat: Freshwater
Scientific name: Melanotaenia trifasciata
Name: Banded Scat
Order: Perciformes
Habitat: Brackish/Freshwater
Scientific name: Scatophagus argus
Name: Banded Snake Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Myrichthys colubrinus
Name: Banded Sole
Order: Pleuronectiformes
Habitat: Marine temperate and tropical waters worldwide
Scientific name: Trachypterus trachypterus
Name: Banded Stingray
Order: Myliobatiformes
Habitat: Marine
Scientific name: Himantura uarnak
Name: Banded Sunfish
Order: Perciformes
Habitat: Freshwater
Scientific name: Enneacanthus obesus
Name: Banded Tigerfish
Order: Characiformes
Habitat: Freshwater
Scientific name: Hydrocynus vittatus
Name: Banded Trumpeter
Order: Perciformes
Habitat: Marine
Scientific name: Pelates sexlineatus
Name: Banded Whiting
Order: Perciformes
Habitat: Marine temperate waters of Australia
Scientific name: Sillago bassensis
Name: Bandtail Goatfish
Order: Perciformes
Habitat: Marine
Scientific name: Upeneus taeniopterus
Name: Banggai Cardinalfish
Order: Perciformes
Habitat: Marine
Scientific name: Pterapogon kauderni
Name: Banjo Catfish
Order: Siluriformes
Habitat: Freshwater rivers and streams in South America
Scientific name: Bunocephalus coracoideus
Name: Banjul Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus banjulensis
Name: Bank Sea Bass
Order: Perciformes
Habitat: Marine
Scientific name: Centropristis ocyurus
Name: Bank Seabass
Order: Perciformes
Habitat: Marine
Scientific name: Centropristis ocyurus
Name: Baqueta
Order: Perciformes
Habitat: Marine
Scientific name: Epinephelus analogus
Name: Barb
Order: Cypriniformes
Habitat: Freshwater rivers and lakes in Asia and Africa
Scientific name: Puntius
Name: Barbel
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Barbus barbus
Name: Barbel Chub
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Mylocheilus caurinus
Name: Barbel Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus barbonico
Name: Barbeled Dragonfish
Order: Stomiiformes
Habitat: Deep Marine
Scientific name: Stomias boa
Name: Barbled Grunter
Order: Perciformes
Habitat: Freshwater/Brackish
Scientific name: Mesopristes argenteus
Name: Barbour's Seahorse
Order: Syngnathiformes
Habitat: Marine
Scientific name: Hippocampus barbouri
Name: Barbu
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Betta pugnax
Name: Bardet's Snake Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Ophichthus bardeti
Name: Bareye Grunt
Order: Perciformes
Habitat: Marine
Scientific name: Pomadasys argyreus
Name: Barfin Plaice
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Pleuronectes quadrituberculatus
Name: Bargibant's Pygmy Seahorse
Order: Syngnathiformes
Habitat: Marine
Scientific name: Hippocampus bargibanti
Name: Barking Gourami
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Trichopsis vittata
Name: Barnard's Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobiodon histrio
Name: Barracuda
Order: Perciformes
Habitat: Marine tropical and subtropical waters worldwide
Scientific name: Sphyraena barracuda
Name: Barramundi
Order: Perciformes
Habitat: Freshwater and estuarine waters in the Indo-Pacific
Scientific name: Lates calcarifer
Name: Barred Flagtail
Order: Perciformes
Habitat: Freshwater/Brackish
Scientific name: Kuhlia mugil
Name: Barred Hamlet
Order: Perciformes
Habitat: Marine
Scientific name: Hypoplectrus puella
Name: Barred Knifejaw
Order: Perciformes
Habitat: Marine
Scientific name: Oplegnathus fasciatus
Name: Barred Parore
Order: Perciformes
Habitat: Marine
Scientific name: Girella zebra
Name: Barred Pencil Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Cheilio inermis
Name: Barred Sandperch
Order: Perciformes
Habitat: Marine
Scientific name: Parapercis coarctata
Name: Barred Seabass
Order: Perciformes
Habitat: Marine
Scientific name: Lateolabrax latus
Name: Barred Soapfish
Order: Perciformes
Habitat: Marine
Scientific name: Rypticus subbifrenatus
Name: Barreleye
Order: Argentiniformes
Habitat: Deep Marine
Scientific name: Macropinna microstoma
Name: Barrelfish
Order: Perciformes
Habitat: Marine
Scientific name: Hyperoglyphe perciformis
Name: Basketmouth
Order: Osteoglossiformes
Habitat: Freshwater
Scientific name: Datnioides microlepis
Name: Basking Shark
Order: Lamniformes
Habitat: Marine temperate waters worldwide
Scientific name: Cetorhinus maximus
Name: Bass
Order: Perciformes
Habitat: Freshwater and marine waters worldwide
Scientific name: Micropterus salmoides
Name: Bassariscus
Order: Perciformes
Habitat: Freshwater (Unconfirmed as a fish)
Scientific name: Bassariscus astutus
Name: Basslet
Order: Perciformes
Habitat: Marine
Scientific name: Gramma loreto
Name: Bastard Halibut
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Paralichthys californicus
Name: Bat Ray
Order: Myliobatiformes
Habitat: Marine
Scientific name: Myliobatis californica
Name: Batavian Mackerel
Order: Scombriformes
Habitat: Marine
Scientific name: Rastrelliger brachysoma
Name: Batfish
Order: Ostraciiformes
Habitat: Marine tropical and subtropical waters of the Indo-Pacific
Scientific name: Platax orbicularis
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Name: Batfish (Atlantic)
Order: Lophiiformes
Habitat: Marine
Scientific name: Ogcocephalus nasutus
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Name: Batfish (Ogcocephalus)
Order: Lophiiformes
Habitat: Marine
Scientific name: Ogcocephalus corniger
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Name: Batfish (Platax)
Order: Perciformes
Habitat: Saltwater
Scientific name: Platax orbicularis
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Name: Batfish (Spotted)
Order: Lophiiformes
Habitat: Marine
Scientific name: Halieutichthys aculeatus
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Name: Batfish (Teira)
Order: Perciformes
Habitat: Marine
Scientific name: Platax teira
Name: Bathyacmaea
Order: Patellogastropoda
Habitat: Marine (Deep Sea)
Scientific name: Bathyacmaea
Name: Baxter's Bass
Order: Perciformes
Habitat: Marine
Scientific name: Centropristis fuscula
Name: Bay Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Lepidogobius lepidus
Name: Bay Pipefish
Order: Syngnathiformes
Habitat: Marine
Scientific name: Syngnathus leptorhynchus
Name: Beaked Coralfish
Order: Perciformes
Habitat: Marine
Scientific name: Chelmon rostratus
Name: Beaked Sandfish
Order: Mugiliformes
Habitat: Marine
Scientific name: Gonorynchus gonorynchus
Name: Bearded Brotula
Order: Ophidiiformes
Habitat: Marine deep waters worldwide
Scientific name: Brotula barbata
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Name: Bearded Brotula (Deepwater)
Order: Ophidiiformes
Habitat: Marine (Deepwater)
Scientific name: Barathronus affinis
Name: Bearded Brotula Bass
Order: Ophidiiformes
Habitat: Deep Marine
Scientific name: Pseudorhegma polynema
Name: Bearded Brotula Basslet
Order: Ophidiiformes
Habitat: Saltwater
Scientific name: Brotulotaenia nudipes
Name: Bearded Dragonfish
Order: Stomiiformes
Habitat: Marine (Deepwater)
Scientific name: Stomias boa ferox
Name: Bearded Seahorse
Order: Syngnathiformes
Habitat: Marine tropical waters of the Indo-Pacific
Scientific name: Hippocampus barbouri
Name: Beardfish
Order: Perciformes
Habitat: Marine deep waters worldwide
Scientific name: Polymixia nobilis
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Name: Beardfish (Owstonia)
Order: Perciformes
Habitat: Marine (Deep Sea)
Scientific name: Owstonia
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Name: Beardfish (Polymixia)
Order: Polymixiiformes
Habitat: Marine (Deep Sea)
Scientific name: Polymixia
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Name: Beardie (Lacefin)
Order: Ophidiiformes
Habitat: Deep Marine
Scientific name: Polymixia longispina
Name: Beardied Scapheles
Order: Polymixiiformes
Habitat: Marine
Scientific name: Polymixia nobilis
Name: Beau Gummich
Order: Perciformes
Habitat: Marine
Scientific name: Epinephelus reticulatus
Name: Beautiful Snoutfish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Podothecus sachi
Name: Beka Sturgeon
Order: Acipenseriformes
Habitat: Freshwater/Brackish
Scientific name: Acipenser nudiventris
Name: Belone
Order: Beloniformes
Habitat: Saltwater
Scientific name: Belone belone
Name: Belontia
Order: Perciformes
Habitat: Freshwater
Scientific name: Belontia signata
Name: Beluga Sturgeon
Order: Acipenseriformes
Habitat: Freshwater and brackish waters of the Caspian and Black Sea basins
Scientific name: Huso huso
Name: Benchley's Anemonefish
Order: Perciformes
Habitat: Marine
Scientific name: Amphiprion benchleyi
Name: Bengal Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Puntius terio
Name: Bengal Brotula
Order: Ophidiiformes
Habitat: Deep Marine
Scientific name: Brotula multibarbata
Name: Bengal Sergeant
Order: Perciformes
Habitat: Marine
Scientific name: Abudefduf bengalensis
Name: Bengali Loach
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Botia dario
Name: Bengali Scat
Order: Perciformes
Habitat: Brackish and marine waters in the Indo-Pacific
Scientific name: Scatophagus argus
Name: Beni Cichlid
Order: Cichliformes
Habitat: Freshwater
Scientific name: Cichla orinocensis
Name: Bennet's Dragonet
Order: Perciformes
Habitat: Marine
Scientific name: Synchiropus bennetti
Name: Benthic Grunter
Order: Perciformes
Habitat: Marine
Scientific name: Pomadasys opercularis
Name: Bering Wolffish
Order: Perciformes
Habitat: Marine
Scientific name: Anarhichas orientalis
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Name: Bering Wolffish (Northern)
Order: Perciformes
Habitat: Marine
Scientific name: Anarhichas orientalis
Name: Berkley Bream
Order: Perciformes
Habitat: Marine
Scientific name: Mylio australis
Name: Bermuda Chub
Order: Perciformes
Habitat: Marine
Scientific name: Kyphosus sectatrix
Name: Besudach
Order: Osmeriformes
Habitat: Freshwater/Brackish
Scientific name: Osmerus mordax dentex
Name: Betta
Order: Perciformes
Habitat: Freshwater still and slow-moving waters in Southeast Asia
Scientific name: Betta splendens
Name: Bichir
Order: Polypteriformes
Habitat: Freshwater
Scientific name: Polypteridae (family)
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Name: Bichir (Polypterus)
Order: Polypteriformes
Habitat: Freshwater
Scientific name: Polypterus
Name: Bicolor Blenny
Order: Perciformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Ecsenius bicolor
Name: Bicolor Damselfish
Order: Perciformes
Habitat: Marine tropical reefs in the Western Atlantic
Scientific name: Stegastes partitus
Name: Bicolor Goatfish
Order: Perciformes
Habitat: Marine
Scientific name: Parupeneus barberinus
Name: Bicolour Angelfish
Order: Perciformes
Habitat: Saltwater
Scientific name: Centropyge bicolor
Name: Bicolour Cleaning Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Labroides bicolor
Name: Big Skate
Order: Rajiformes
Habitat: Marine
Scientific name: Raja binoculata
Name: Bigeye Barracuda
Order: Perciformes
Habitat: Marine
Scientific name: Sphyraena forsteri
Name: Bigeye Croaker
Order: Perciformes
Habitat: Marine
Scientific name: Micropogonias megalops
Name: Bigeye Houndshark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Iago omanensis
Name: Bigeye Kingfish
Order: Carangiformes
Habitat: Marine
Scientific name: Caranx sexfasciatus
Name: Bigeye Pipefish
Order: Syngnathiformes
Habitat: Marine
Scientific name: Syngnathus pelagicus
Name: Bigeye Sand Tiger
Order: Lamniformes
Habitat: Marine
Scientific name: Odontaspis norrisi
Name: Bigeye Scad
Order: Carangiformes
Habitat: Marine
Scientific name: Selar crumenophthalmus
Name: Bigeye Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus lutjanus
Name: Bigeye Thresher
Order: Lamniformes
Habitat: Marine
Scientific name: Alopias superciliosus
Name: Bigeye Thresher Shark
Order: Lamniformes
Habitat: Marine
Scientific name: Alopias superciliosus
Name: Bigeye Tuna
Order: Perciformes
Habitat: Marine tropical and subtropical waters worldwide
Scientific name: Thunnus obesus
Name: Bigeyed Thresher Shark
Order: Lamniformes
Habitat: Marine
Scientific name: Alopias superciliosus
Name: Bigeyed Tuna
Order: Perciformes
Habitat: Marine
Scientific name: Thunnus obesus
Name: Bighead Carp
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Hypophthalmichthys nobilis
Name: Bigmouth Bass
Order: Perciformes
Habitat: Freshwater
Scientific name: Micropterus salmoides
Name: Bigmouth Buffalo
Order: Cypriniformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Ictiobus cyprinellus
Name: Bigmouth Sleeper
Order: Gobiiformes
Habitat: Freshwater/Brackish
Scientific name: Gobiomorus dormitor
Name: Bigmouth Sole
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Hippoglossoides elassodon
Name: Bignose Croaker
Order: Perciformes
Habitat: Marine
Scientific name: Johnius macrorhynus
Name: Bignose Shark
Order: Carcharhiniformes
Habitat: Marine tropical and subtropical waters worldwide
Scientific name: Carcharhinus altimus
Name: Bigscale
Order: Beryciformes
Habitat: Marine deep waters tropical and temperate worldwide
Scientific name: Melamphaes
Name: Bigscale Beryx
Order: Beryciformes
Habitat: Marine
Scientific name: Beryx decadactylus
Name: Bigscale Snaggletooth
Order: Stomiiformes
Habitat: Marine (Deep Sea)
Scientific name: Astronesthes niger
Name: Bigscale Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus johnii
Name: Bigscale Thresher
Order: Lamniformes
Habitat: Marine
Scientific name: Alopias vulpinus
Name: Bigspine Croaker
Order: Perciformes
Habitat: Marine
Scientific name: Micropogonias altipinnis
Name: Bika
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Labeo pangasius
Name: Billfish
Order: Beloniformes
Habitat: Marine
Scientific name: Makaira nigricans
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Name: Billfish (general term)
Order: Istiophoriformes
Habitat: Marine
Scientific name: Istiophorus platypterus
Name: Bimac Cichlid
Order: Perciformes
Habitat: Freshwater
Scientific name: Retroculus argenteus
Name: Bimaculated Sole
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Solea bimaculata
Name: Bimaculatus Anthias
Order: Perciformes
Habitat: Marine
Scientific name: Pseudanthias bimaculatus
Name: Bimaculatus Cichlid
Order: Cichliformes
Habitat: Freshwater
Scientific name: Hemichromis bimaculatus
Name: Binga
Order: Perciformes
Habitat: Marine coastal waters of West Africa
Scientific name: Ethmalosa fimbriata
Name: Binga Blenny
Order: Blenniiformes
Habitat: Marine
Scientific name: Ophioblennius atlanticus
Name: Bingi
Order: Perciformes
Habitat: Saltwater
Scientific name: Sciaena bathybius
Name: Binnil
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Labeo fimbriatus
Name: Bird Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Gomphosus varius
Name: Birdfish
Order: Symphysanodontiformes
Habitat: Marine
Scientific name: Symphysanodon typus
Name: Birdsnout Sand Tiger
Order: Lamniformes
Habitat: Marine
Scientific name: Odontaspis ferox
Name: Bireli
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Labeo boga
Name: Biscay Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobius xanthocephalus
Name: Bishop Fish
Order: Perciformes
Habitat: Marine deep waters in tropical and subtropical regions
Scientific name: Symphysanodon typus
Name: Bishop Rockfish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Sebastes bishopi
Name: Bismarck Flying Fox
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Epalzeorhynchos bicolor
Name: Bismarck Garfish
Order: Beloniformes
Habitat: Freshwater
Scientific name: Arrhamphus sclerolepis
Name: Bismarck Herring
Order: Clupeiformes
Habitat: Marine
Scientific name: Clupea harengus membras
Name: Bison Fish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Oxydoras niger
Name: Bison Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobiopsis bison
Name: Bitterling
Order: Cypriniformes
Habitat: Freshwater rivers and lakes in Eurasia
Scientific name: Rhodeus sericeus
Name: Biwa Lake Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Silurus biwae
Name: Black Angel Shark
Order: Squatiniformes
Habitat: Marine
Scientific name: Squatina niger
Name: Black Angler
Order: Lophiiformes
Habitat: Deep Marine
Scientific name: Melanocetus johnsonii
Name: Black Anglerfish
Order: Lophiiformes
Habitat: Marine deep waters worldwide
Scientific name: Lophius niger
Name: Black Arrowhead Toadfish
Order: Batrachoidiformes
Habitat: Marine
Scientific name: Opsanus beta
Name: Black Banded Sea Perch
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus fulvus
Name: Black Bar Endler
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Poecilia wingei
Name: Black Bass
Order: Perciformes
Habitat: Freshwater rivers and lakes in North America
Scientific name: Micropterus
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Name: Black Bass (Large Eye)
Order: Perciformes
Habitat: Freshwater
Scientific name: Micropterus coosae
Name: Black Brotula
Order: Ophidiiformes
Habitat: Marine
Scientific name: Brotula barbata
Name: Black Cardinalfish
Order: Perciformes
Habitat: Marine
Scientific name: Apogonichthys puncticulatus
Name: Black Damselfish
Order: Perciformes
Habitat: Marine
Scientific name: Neoglyphidodon melas
Name: Black Dogfish
Order: Squaliformes
Habitat: Marine
Scientific name: Centroscyllium fabricii
Name: Black Dragonfish
Order: Stomiiformes
Habitat: Marine deep waters worldwide
Scientific name: Idiacanthus atlanticus
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Name: Black Dragonfish (Deepsea)
Order: Stomiiformes
Habitat: Marine (Deepwater)
Scientific name: Idiacanthus antrostomus
Name: Black Drum
Order: Perciformes
Habitat: Marine
Scientific name: Pogonias cromis
Name: Black Eeltail Catfish
Order: Siluriformes
Habitat: Marine/Brackish
Scientific name: Plotosus canius
Name: Black Fin Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus limbatus
Name: Black Ghost Knifefish
Order: Gymnotiformes
Habitat: Freshwater rivers in South America
Scientific name: Apteronotus albifrons
Name: Black Goblinfish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Inimicus didactylus
Name: Black Grouper
Order: Perciformes
Habitat: Marine
Scientific name: Mycteroperca bonaci
Name: Black Grubfish
Order: Perciformes
Habitat: Marine
Scientific name: Congrogadus subducens
Name: Black Grunt
Order: Perciformes
Habitat: Marine
Scientific name: Haemulon bonariense
Name: Black Guitarfish
Order: Rhinopristiformes
Habitat: Marine
Scientific name: Glaucostegus microlepis
Name: Black Guppy
Order: Poeciliidae
Habitat: Freshwater
Scientific name: Poecilia reticulata (melanistic variant)
Name: Black Hake
Order: Gadiformes
Habitat: Marine
Scientific name: Merluccius polli
Name: Black Handfish
Order: Lophiiformes
Habitat: Marine
Scientific name: Brachionichthys niger
Name: Black Hawkfish
Order: Perciformes
Habitat: Marine
Scientific name: Paracirrhites forsteri
Name: Black Hiding Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Cryptocentrus pavoninoides
Name: Black Jack
Order: Carangiformes
Habitat: Marine
Scientific name: Caranx lugubris
Name: Black Jumper
Order: Perciformes
Habitat: Marine
Scientific name: Malacanthus niger
Name: Black Kingfish
Order: Carangiformes
Habitat: Marine
Scientific name: Rachycentron canadum
Name: Black Knife Fish
Order: Gymnotiformes
Habitat: Freshwater
Scientific name: Apteronotus albifrons
Name: Black Lancer
Order: Perciformes
Habitat: Marine
Scientific name: Lethrinus nebulosus
Name: Black Margate
Order: Perciformes
Habitat: Marine
Scientific name: Anisotremus surinamensis
Name: Black Marlin
Order: Perciformes
Habitat: Marine tropical and subtropical waters of the Indo-Pacific
Scientific name: Makaira indica
Name: Black Molly
Order: Cyprinodontiformes
Habitat: Freshwater and brackish waters of Central and South America
Scientific name: Poecilia sphenops
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Name: Black Molly (Spotted)
Order: Cyprinodontiformes
Habitat: Freshwater/Brackish
Scientific name: Poecilia sphenops var. spotted
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Name: Black Molly (Wild form)
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Poecilia sphenops
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Name: Black Molly (Wild)
Order: Cyprinodontiformes
Habitat: Freshwater/Brackish
Scientific name: Poecilia sphenops
Name: Black Mudskipper
Order: Gobiiformes
Habitat: Brackish/Marine
Scientific name: Periophthalmus modestus
Name: Black Neon Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Hyphessobrycon herbertaxelrodi
Name: Black Pacu
Order: Characiformes
Habitat: Freshwater
Scientific name: Colossoma macropomum
Name: Black Paradise Fish
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Macropodus concolor
Name: Black Perch
Order: Perciformes
Habitat: Marine rocky reefs of the Northeast Pacific
Scientific name: Embiotoca jacksoni
Name: Black Phantom Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Hyphessobrycon megalopterus
Name: Black Pipefish
Order: Syngnathiformes
Habitat: Marine
Scientific name: Syngnathus fuscus
Name: Black Pomfret
Order: Perciformes
Habitat: Marine
Scientific name: Parastromateus niger
Name: Black Rabbitfish
Order: Perciformes
Habitat: Marine
Scientific name: Siganus niger
Name: Black Rake-Gilled Hagfish
Order: Myxiniformes
Habitat: Deep Marine
Scientific name: Eptatretus cirrhatus
Name: Black River Bass
Order: Perciformes
Habitat: Freshwater
Scientific name: Micropterus punctulatus
Name: Black Ruby Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Pethia nigrofasciata
Name: Black Saddle Coralgroup
Order: Perciformes
Habitat: Marine
Scientific name: Plectropomus laevis
Name: Black Sea Bass
Order: Perciformes
Habitat: Marine coastal waters of the Western Atlantic
Scientific name: Centropristis striata
Name: Black Sea Bream
Order: Perciformes
Habitat: Marine coastal waters of the Eastern Atlantic and Mediterranean
Scientific name: Spondyliosoma cantharus
Name: Black Seabass
Order: Perciformes
Habitat: Marine
Scientific name: Centropristis striata
Name: Black Sharkminnow
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Labeo chrysophekadion
Name: Black Skate
Order: Rajiformes
Habitat: Marine
Scientific name: Dipturus flaveolus
Name: Black Skirt Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Gymnocorymbus ternetzi
Name: Black Snakehead
Order: Perciformes
Habitat: Freshwater
Scientific name: Channa melasoma
Name: Black Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Apsilus dentatus
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Name: Black Snapper (Lutjanus)
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus griseus
Name: Black Soldierfish
Order: Beryciformes
Habitat: Marine
Scientific name: Myripristis murdjan
Name: Black Spotted Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobius niger
Name: Black Spotted Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax fimbriatus
Name: Black Spotted Puffer
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Arothron nigropunctatus
Name: Black Spotted Toadie
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Torquigener nigropunctatus
Name: Black Surgeonfish
Order: Perciformes
Habitat: Marine
Scientific name: Acanthurus nigricans
Name: Black Swallowtail
Order: Perciformes
Habitat: Marine
Scientific name: Genyagnus monopterygius
Name: Black Swellshark
Order: Carcharhiniformes
Habitat: Marine temperate waters of Australia
Scientific name: Cephaloscyllium isabellum
Name: Black Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Gymnocorymbus ternetzi
Name: Black Tiger Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Puntigrus tetrazona
Name: Black Triggerfish
Order: Tetraodontiformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Melichthys niger
Name: Black Umbrella Mouth
Order: Perciformes
Habitat: Marine deep waters worldwide
Scientific name: Malacanthus brevirostris
Name: Black Unicornfish
Order: Perciformes
Habitat: Marine
Scientific name: Naso unicornis
Name: Black Velvet Angelfish
Order: Perciformes
Habitat: Marine
Scientific name: Chaetodontoplus melanosoma
Name: Black Westralian Bull Shark
Order: Carcharhiniformes
Habitat: Brackish/Marine
Scientific name: Carcharhinus leucas (Western Australia)
Name: Black-banded Sea Perch
Order: Perciformes
Habitat: Marine tropical reefs in the Caribbean
Scientific name: Hypoplectrus nigricans
Name: Black-edged Barbel
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Barbus prespensis
Name: Black-edged Lyretail
Order: Perciformes
Habitat: Marine
Scientific name: Variola louti
Name: Black-handed Parrotfish
Order: Perciformes
Habitat: Marine
Scientific name: Scarus niger
Name: Black-headed Mackerel
Order: Scombriformes
Habitat: Marine
Scientific name: Rastrelliger brachysoma
Name: Black-spotted Porcupinefish
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Diodon holocanthus
Name: Black-spotted Puffer
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Arothron nigropunctatus
Name: Blackbanded Sunfish
Order: Perciformes
Habitat: Freshwater ponds and swamps in Eastern North America
Scientific name: Enneacanthus chaetodon
Name: Blackbar Drum
Order: Perciformes
Habitat: Marine
Scientific name: Pareques iwamotoi
Name: Blackbar Soldierfish
Order: Beryciformes
Habitat: Marine tropical reefs in the Atlantic
Scientific name: Myripristis jacobus
Name: Blackbellied Angler
Order: Lophiiformes
Habitat: Marine deep waters worldwide
Scientific name: Haplophryne mollis
Name: Blackbelly Rosefish
Order: Perciformes
Habitat: Marine
Scientific name: Helicolenus dactylopterus
Name: Blackcheek Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax kontik
Name: Blackcheek Tonguefish
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Symphurus plagiusa
Name: Blackedge Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax nigromarginatus
Name: Blackeye Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Coryphopterus nicholsii
Name: Blackfaced Blenny
Order: Blenniiformes
Habitat: Marine
Scientific name: Tripterygius etheostoma
Name: Blackfin Angelfish
Order: Perciformes
Habitat: Marine
Scientific name: Apolemichthys arcuatus
Name: Blackfin Barracuda
Order: Scombriformes
Habitat: Marine
Scientific name: Sphyraena qenie
Name: Blackfin Croaker
Order: Perciformes
Habitat: Saltwater
Scientific name: Micropogonias megalops
Name: Blackfin Grouper
Order: Perciformes
Habitat: Marine
Scientific name: Mycteroperca bonaci
Name: Blackfin Grubfish
Order: Perciformes
Habitat: Marine
Scientific name: Parapercis allporti
Name: Blackfin Hogfish
Order: Perciformes
Habitat: Marine
Scientific name: Bodianus loxozonus
Name: Blackfin Icefish
Order: Perciformes
Habitat: Marine (Antarctic)
Scientific name: Chaenocephalus aceratus
Name: Blackfin Lyretail
Order: Perciformes
Habitat: Marine
Scientific name: Variola punctulata
Name: Blackfin Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus limbatus
Name: Blackfin Snake Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Ophichthus punctifer
Name: Blackfin Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus buccanella
Name: Blackfin Sweeper
Order: Perciformes
Habitat: Marine
Scientific name: Pempheris schomburgkii
Name: Blackfin Tuna
Order: Perciformes
Habitat: Marine tropical and subtropical waters of the Western Atlantic
Scientific name: Thunnus atlanticus
Name: Blackfoot Anthias
Order: Perciformes
Habitat: Marine
Scientific name: Pseudanthias huchtii
Name: Blackgill Rockfish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Sebastes melanostomus
Name: Blackhand Paradise Fish
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Macropodus concolor
Name: Blackmargined Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax fimbriatus
Name: Blackmouth Cat Shark
Order: Carcharhiniformes
Habitat: Deep Marine
Scientific name: Galeus melastomus
Name: Blackmouth Catshark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Galeus melastomus
Name: Blackmouth Croaker
Order: Perciformes
Habitat: Marine
Scientific name: Atrobucca nibe
Name: Blackmouth Gurnard
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Lophius budegassa
Name: Blacknose Shark
Order: Carcharhiniformes
Habitat: Marine tropical and subtropical waters of the Western Atlantic
Scientific name: Carcharhinus acronotus
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Name: Blacknose Shark (Deepwater)
Order: Carcharhiniformes
Habitat: Deep Marine
Scientific name: Carcharhinus acronotus
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Name: Blacknose Shark (Pacific)
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus acronotus (Pacific population)
Name: Blackspot Goatfish
Order: Perciformes
Habitat: Marine
Scientific name: Parupeneus spilurus
Name: Blackspot Picarel
Order: Perciformes
Habitat: Marine
Scientific name: Spicara melanurus
Name: Blackspot Sergeant
Order: Perciformes
Habitat: Marine
Scientific name: Abudefduf sordidus
Name: Blackspot Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus sealei
Name: Blackspot Snapper
Order: Perciformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Lutjanus fulvus
Name: Blackspot Squirrelfish
Order: Beryciformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Sargocentron coruscum
Name: Blackspotted Catshark
Order: Carcharhiniformes
Habitat: Marine (Deep Sea)
Scientific name: Apristurus macrorhynchus
Name: Blackspotted Croaker
Order: Perciformes
Habitat: Marine
Scientific name: Protonibea diacanthus
Name: Blackspotted Moray
Order: Anguilliformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Gymnothorax buroensis
Name: Blackspotted Puffer
Order: Tetraodontiformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Arothron nigropunctatus
Name: Blackstripe Cardinalfish
Order: Gobiiformes
Habitat: Marine
Scientific name: Apogon nigrofasciatus
Name: Blacktail Calfbeak
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Rhinecanthus rectangulus
Name: Blacktail Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Acanthogobius flavimanus
Name: Blacktail Shark
Order: Carcharhiniformes
Habitat: Marine tropical and subtropical waters of the Indo-Pacific
Scientific name: Carcharhinus amblyrhynchoides
Name: Blacktail Shiner
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Cyprinella venusta
Name: Blacktail Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus fulvus
Name: Blacktip Reef Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus melanopterus
Name: Blacktip Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus limbatus
Name: Blackwedge Butterflyfish
Order: Perciformes
Habitat: Marine
Scientific name: Chaetodon falcula
Name: Blackwing Flyingfish
Order: Beloniformes
Habitat: Saltwater
Scientific name: Hirundichthys rondeletii
Name: Blackwing Searobin
Order: Perciformes
Habitat: Marine temperate waters of the Western Pacific
Scientific name: Pterygotrigla picta
Name: Blada
Order: Perciformes
Habitat: Marine
Scientific name: Sardinella maderensis
Name: Blanchard's Sole
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Pleuronectes perpureus
Name: Blass' Hogfish
Order: Perciformes
Habitat: Marine
Scientific name: Bodianus blassii
Name: Blass's Sole
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Solea blassiana
Name: Bleak
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Alburnus alburnus
Name: Bleeding Heart Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Hyphessobrycon erythrostigma
Name: Blennie
Order: Blenniiformes
Habitat: Marine
Scientific name: Blenniidae (family)
Name: Blenniella
Order: Blenniiformes
Habitat: Saltwater
Scientific name: Blenniella periophthalmus
Name: Blennioid
Order: Blenniiformes
Habitat: Marine and brackish waters worldwide
Scientific name: Blennius
Name: Blind Cave Fish
Order: Characiformes
Habitat: Freshwater caves in Mexico
Scientific name: Astyanax jordani
Name: Blind Goby
Order: Gobiiformes
Habitat: Marine intertidal zones of California
Scientific name: Typhlogobius californiensis
Name: Blind Shark
Order: Orectolobiformes
Habitat: Marine
Scientific name: Brachaelurus waddi
Name: Blizzard Fish
Order: Perciformes
Habitat: Marine (Deepwater)
Scientific name: Rhigiophila dearborni
Name: Bloater
Order: Osmeriformes
Habitat: Freshwater
Scientific name: Coregonus hoyi
Name: Blobfish
Order: Scorpaeniformes
Habitat: Marine (Deep Sea)
Scientific name: Psychrolutes marcidus
Name: Bloch's Codlet
Order: Gadiformes
Habitat: Marine
Scientific name: Bregmaceros macclellandii
Name: Bloch's Goby
Order: Gobiiformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Gobiodon blochi
Name: Blonde Ray
Order: Rajiformes
Habitat: Marine
Scientific name: Raja brachyura
Name: Blood Parrot Cichlid
Order: Cichliformes
Habitat: Freshwater (Hybrid)
Scientific name: Amphilophus citrinellus x Cichlasoma synspilum
Name: Bloodfin Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Aphyocharax anisitsi
Name: Bloodworm Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Discordipinna griessingeri
Name: Blotched Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Synodontis clarias
Name: Blotched Fantail Ray
Order: Rajiformes
Habitat: Marine
Scientific name: Taeniurops meyeni
Name: Blue Angelfish
Order: Perciformes
Habitat: Marine tropical reefs in the Western Atlantic
Scientific name: Holacanthus bermudensis
Name: Blue Bass
Order: Perciformes
Habitat: Marine coastal waters of the Western Atlantic
Scientific name: Centropristis philadelphica
Name: Blue Blanquillo
Order: Perciformes
Habitat: Saltwater
Scientific name: Malacanthus plumieri
Name: Blue Blubberlips
Order: Perciformes
Habitat: Marine
Scientific name: Plectorhinchus playfairi
Name: Blue Chromis
Order: Perciformes
Habitat: Marine tropical reefs in the Western Atlantic
Scientific name: Chromis cyanea
Name: Blue Damsel
Order: Perciformes
Habitat: Marine
Scientific name: Pomacentrus alleni
Name: Blue Damselfish
Order: Perciformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Pomacentrus alleni
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Name: Blue Damselfish (Caribbean)
Order: Perciformes
Habitat: Marine
Scientific name: Abudefduf saxatilis
Name: Blue Demoiselle
Order: Perciformes
Habitat: Marine
Scientific name: Chrysiptera cyanea
Name: Blue Devil
Order: Perciformes
Habitat: Marine temperate reefs of Australia
Scientific name: Paraplesiops meleagris
Name: Blue Dot Jawfish
Order: Perciformes
Habitat: Marine
Scientific name: Opistognathus rosenblatti
Name: Blue Dot Stingray
Order: Myliobatiformes
Habitat: Marine
Scientific name: Neotrygon kuhlii
Name: Blue Dragon
Order: Gasterosteiformes
Habitat: Saltwater
Scientific name: Eurypegasus draconis
Name: Blue Eye Rainbowfish
Order: Atheriniformes
Habitat: Freshwater
Scientific name: Pseudomugil signifer
Name: Blue Flounder
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Paralichthys dentatus
Name: Blue Gourami
Order: Anabantiformes
Habitat: Freshwater streams and lakes in Southeast Asia
Scientific name: Trichopodus trichopterus
Name: Blue Guppy
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Poecilia reticulata
Name: Blue Hake
Order: Gadiformes
Habitat: Marine
Scientific name: Macruronus novaezelandiae
Name: Blue Hippo Tang
Order: Perciformes
Habitat: Marine
Scientific name: Paracanthurus hepatus
Name: Blue Killifish
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Chriopeoides rana
Name: Blue Lipped Sea Krait
Order: Elapidae
Habitat: Marine (Venomous Sea Snake – often confused as fish)
Scientific name: Laticauda laticaudata
Name: Blue Lyretail Anthias
Order: Perciformes
Habitat: Marine
Scientific name: Pseudanthias squamipinnis
Name: Blue Marlin
Order: Perciformes
Habitat: Marine tropical and temperate waters worldwide
Scientific name: Makaira nigricans
Name: Blue Paradise Fish
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Macropodus opercularis
Name: Blue Parrotfish
Order: Perciformes
Habitat: Marine
Scientific name: Scarus coeruleus
Name: Blue Ring Angelfish
Order: Perciformes
Habitat: Marine
Scientific name: Pomacanthus annularis
Name: Blue Runner
Order: Carangiformes
Habitat: Marine
Scientific name: Caranx crysos
Name: Blue Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Prionace glauca
Name: Blue Spotted Jawfish
Order: Perciformes
Habitat: Marine
Scientific name: Opistognathus rosenblatti
Name: Blue Spotted Ribbontail Ray
Order: Myliobatiformes
Habitat: Marine
Scientific name: Taeniurops lymma
Name: Blue Tang
Order: Perciformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Paracanthurus hepatus
Name: Blue Tilapia
Order: Cichliformes
Habitat: Freshwater
Scientific name: Oreochromis aureus
Name: Blue Tuna
Order: Perciformes
Habitat: Marine temperate waters of the Southern Hemisphere
Scientific name: Thunnus maccoyii
Name: Blue Whale
Order: Cetacea
Habitat: Marine
Scientific name: Balaenoptera musculus
Name: Blueback Herring
Order: Clupeiformes
Habitat: Freshwater and marine waters of the Western Atlantic
Scientific name: Alosa aestivalis
Name: Bluebanded Goby
Order: Gobiiformes
Habitat: Marine temperate reefs of California
Scientific name: Lythrypnus dalli
Name: Bluefin Killifish
Order: Cyprinodontiformes
Habitat: Freshwater swamps and ponds in the Southeastern United States
Scientific name: Lucania goodei
Name: Bluefin Trevally
Order: Carangiformes
Habitat: Marine
Scientific name: Caranx melampygus
Name: Bluefin Tuna
Order: Scombriformes
Habitat: Marine
Scientific name: Thunnus thynnus
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Name: Bluefin Tuna (Southern)
Order: Scombriformes
Habitat: Marine
Scientific name: Thunnus maccoyii
Name: Bluegill
Order: Perciformes
Habitat: Freshwater
Scientific name: Lepomis macrochirus
Name: Bluegill Sunfish
Order: Perciformes
Habitat: Freshwater
Scientific name: Lepomis macrochirus
Name: Bluehead Chub
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Nocomis leptocephalus
Name: Bluehead Wrasse
Order: Perciformes
Habitat: Marine tropical reefs in the Western Atlantic
Scientific name: Thalassoma bifasciatum
Name: Bluespot Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Valenciennea strigata
Name: Bluespotted Coral Grouper
Order: Perciformes
Habitat: Marine
Scientific name: Plectropomus maculatus
Name: Bluespotted Guppy
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Poecilia reticulata (endler variant)
Name: Bluespotted Mudskipper
Order: Gobiiformes
Habitat: Brackish/Marine
Scientific name: Boleophthalmus pectinirostris
Name: Bluespotted Stingray
Order: Myliobatiformes
Habitat: Marine tropical shallow waters of the Indo-Pacific
Scientific name: Neotrygon kuhlii
Name: Bluespotted Sunfish
Order: Perciformes
Habitat: Freshwater
Scientific name: Enneacanthus gloriosus
Name: Bluestripe Pipefish
Order: Syngnathiformes
Habitat: Marine
Scientific name: Doryrhamphus excisus
Name: Bluestripe Snapper
Order: Perciformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Lutjanus kasmira
Name: Bluestriped Fangblenny
Order: Blenniiformes
Habitat: Marine
Scientific name: Plagiotremus rhinorhynchos
Name: Bluey
Order: Perciformes
Habitat: Marine
Scientific name: Carangoides caeruleopinnatus
Name: Blunthead Cichlid
Order: Cichliformes
Habitat: Freshwater
Scientific name: Tropheus moorii
Name: Blunthead Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Thalassoma amblycephalum
Name: Bluntnose Sixgill Shark
Order: Hexanchiformes
Habitat: Marine
Scientific name: Hexanchus griseus
Name: Boa Cichlid
Order: Cichliformes
Habitat: Freshwater
Scientific name: Cichla intermedia
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Name: Boarfish (Deep-bodied)
Order: Caproiformes
Habitat: Deep Marine
Scientific name: Antigonia capros
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Name: Boarfish (Longspine)
Order: Caproiformes
Habitat: Marine
Scientific name: Capros aper
Name: Bobtail Snipe Eel
Order: Anguilliformes
Habitat: Deep Marine
Scientific name: Cyema atrum
Name: Bocaccio
Order: Perciformes
Habitat: Marine temperate waters of the Northeast Pacific
Scientific name: Sebastes paucispinis
Name: Bodianus
Order: Perciformes
Habitat: Marine tropical reefs in the Atlantic
Scientific name: Bodianus pulchellus
Name: Boga
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Leuciscus idus
Name: Bogardus' Frogfish
Order: Lophiiformes
Habitat: Marine
Scientific name: Antennarius bogardus
Name: Bogue
Order: Perciformes
Habitat: Marine
Scientific name: Boops boops
Name: Bombay Duck
Order: Aulopiformes
Habitat: Saltwater
Scientific name: Harpadon nehereus
Name: Bonapart's Grunter
Order: Perciformes
Habitat: Marine/Brackish
Scientific name: Pomadasys argyreus
Name: Bonaparte's Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobius bonapartei
Name: Bonaparte's Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Bodianus bonaparti
Name: Bonefish
Order: Albuliformes
Habitat: Marine tropical shallow waters worldwide
Scientific name: Albula vulpes
Name: Bonito
Order: Perciformes
Habitat: Marine temperate and tropical waters worldwide
Scientific name: Sarda sarda
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Name: Bonito (Atlantic)
Order: Scombriformes
Habitat: Marine
Scientific name: Sarda sarda
Name: Bonito Shark
Order: Lamniformes
Habitat: Marine
Scientific name: Isurus oxyrinchus
Name: Bonnethead Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Sphyrna tiburo
Name: Bonytail Chub
Order: Cypriniformes
Habitat: Freshwater rivers in the Southwestern United States
Scientific name: Gila elegans
Name: Bork
Order: Siluriformes
Habitat: Freshwater
Scientific name: Pelteobagrus fulvidraco
Name: Borneo Sucker
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Gastromyzon
Name: Boston Cod
Order: Gadiformes
Habitat: Marine
Scientific name: Gadus morhua
Name: Boston Eel Pout
Order: Perciformes
Habitat: Marine
Scientific name: Zoarces americanus
Name: Boston Mackerel
Order: Scombriformes
Habitat: Marine
Scientific name: Scomber scombrus
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Name: Bothidae (Left-Eyes Flounder)
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Bothidae
Name: Bottlenose Skate
Order: Rajiformes
Habitat: Marine
Scientific name: Rostroraja alba
Name: Boulder Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobius cobitis
Name: Boulenger's Bream
Order: Characiformes
Habitat: Freshwater
Scientific name: Brycinus nurse
Name: Boulenger's Killifish
Order: Cyprinodontiformes
Habitat: Freshwater
Scientific name: Nothobranchius boulengeri
Name: Bouri
Order: Perciformes
Habitat: Brackish/Marine
Scientific name: Liza subviridis
Name: Bowfin
Order: Amiiformes
Habitat: Freshwater slow-moving waters in Eastern North America
Scientific name: Amia calva
Name: Boxfish
Order: Tetraodontiformes
Habitat: Marine tropical reefs in the Indo-Pacific
Scientific name: Ostracion cubicus
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Name: Boxfish (Longhorn)
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Lactoria cornuta
Name: Bradford's Gourami
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Trichopsis bradfordi
Name: Brahminy Kitefish
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Scorpaenopsis venosa
Name: Brama
Order: Scombriformes
Habitat: Marine
Scientific name: Brama brama
Name: Bramble Shark
Order: Squaliformes
Habitat: Marine
Scientific name: Echinorhinus brucus
Name: Branch Perch
Order: Perciformes
Habitat: Freshwater
Scientific name: Lates mariae
Name: Branched Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax isingteena
Name: Brandon's Basslet
Order: Perciformes
Habitat: Marine (Deep Sea)
Scientific name: Lipogramma randelii
Name: Brandt's Skate
Order: Rajiformes
Habitat: Saltwater
Scientific name: Okamejei brandtii
Name: Brassy Drum
Order: Perciformes
Habitat: Marine
Scientific name: Sciaena trewavasae
Name: Brassy Minnow
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Hybognathus hankinsoni
Name: Brazilian Flathead
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Cociella punctata
Name: Brazilian Flounder
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Paralichthys patagonicus
Name: Brazilian Grunt
Order: Perciformes
Habitat: Marine
Scientific name: Haemulon steindachneri
Name: Brazilian Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax ocellatus
Name: Brazilian Searobin
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Prionotus rigonianus
Name: Breaksea Cod
Order: Perciformes
Habitat: Marine
Scientific name: Epinephelides armatus
Name: Bream
Order: Cypriniformes
Habitat: Freshwater lakes and rivers in Europe and Asia
Scientific name: Abramis brama
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Name: Bream (Silver)
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Abramis brama
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Name: Bream (Western Yellowfin)
Order: Perciformes
Habitat: Marine
Scientific name: Acanthopagrus lylei
Name: Breeding Gourami
Order: Anabantiformes
Habitat: Freshwater
Scientific name: Trichogaster trichopterus
Name: Breeze Snapper
Order: Perciformes
Habitat: Marine
Scientific name: Lutjanus lutjanus
Name: Brewer's Conger
Order: Anguilliformes
Habitat: Deep Marine
Scientific name: Bathycongrus dubius
Name: Brichard's Lamprologus
Order: Cichliformes
Habitat: Freshwater lakes in East Africa
Scientific name: Neolamprologus brichardi
Name: Brichardi Cichlid
Order: Perciformes
Habitat: Freshwater
Scientific name: Neolamprologus brichardi
Name: Bridled Goby
Order: Gobiiformes
Habitat: Freshwater
Scientific name: Padogobius bonelli
Name: Bridled Ternlet
Order: Perciformes
Habitat: Marine
Scientific name: Sphyraena novaehollandiae
Name: Brill
Order: Pleuronectiformes
Habitat: Marine
Scientific name: Scophthalmus rhombus
Name: Bristle Mouth
Order: Stomiiformes
Habitat: Marine deep waters worldwide
Scientific name: Cyclothone
Name: Bristlefish
Order: Stomiiformes
Habitat: Marine
Scientific name: Stomias boa
Name: Bristlemouth
Order: Stomiiformes
Habitat: Marine deep waters worldwide
Scientific name: Gonostoma denudatum
Name: Bristlenose Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ancistrus
Name: Bristlenose Pleco
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ancistrus (genus)
Name: Bristletooth Surgeonfish
Order: Perciformes
Habitat: Marine
Scientific name: Ctenochaetus striatus
Name: Bristletooth Tang
Order: Perciformes
Habitat: Marine
Scientific name: Ctenochaetus striatus
Name: Brittle Starfish Fish
Order: Perciformes
Habitat: Marine
Scientific name: Carapus bermudensis
Name: Broad Whitefish
Order: Salmoniformes
Habitat: Freshwater lakes and rivers in Northern Eurasia and North America
Scientific name: Coregonus nasus
Name: Broadbanded Cardinalfish
Order: Perciformes
Habitat: Marine
Scientific name: Apogon compressus
Name: Broadbanded Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobiodon rivulatus
Name: Broadbanded Sardine
Order: Clupeiformes
Habitat: Marine
Scientific name: Sardinella lemuru
Name: Broadbarred King Mackerel
Order: Scombriformes
Habitat: Marine
Scientific name: Scomberomorus semifasciatus
Name: Broadbilled Swordfish
Order: Xiphiiformes
Habitat: Marine
Scientific name: Xiphias gladius
Name: Broadstripe Cardinalfish
Order: Perciformes
Habitat: Marine
Scientific name: Apogon doederleini
Name: Broken-stripe Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Priolepis semidoliata
Name: Bronze Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Corydoras aeneus
Name: Bronze Corydoras
Order: Siluriformes
Habitat: Freshwater rivers and streams in South America
Scientific name: Corydoras aeneus
Name: Bronzestripe Grunter
Order: Perciformes
Habitat: Freshwater/Brackish
Scientific name: Mesopristes cancellatus
Name: Brook Lamprey
Order: Petromyzontiformes
Habitat: Freshwater
Scientific name: Lampetra planeri
Name: Brook Stickleback
Order: Gasterosteiformes
Habitat: Freshwater
Scientific name: Culaea inconstans
Name: Brook Trout
Order: Salmoniformes
Habitat: Freshwater
Scientific name: Salvelinus fontinalis
Name: Brooklyn Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Gobiosoma bosc
Name: Broomtail Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Cheilinus lunulatus
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Name: Brotula (general)
Order: Ophidiiformes
Habitat: Marine
Scientific name: Brotula barbata
Name: Brown Back Grunt
Order: Perciformes
Habitat: Marine
Scientific name: Haemulon aurolineatum
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Name: Brown Banded Bamboo Shark (deepwater)
Order: Orectolobiformes
Habitat: Marine
Scientific name: Chiloscyllium punctatum (uncommon deepwater variant)
Name: Brown Bullhead
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ameiurus nebulosus
Name: Brown Bullhead Catfish
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ameiurus nebulosus
Name: Brown Comber
Order: Perciformes
Habitat: Marine coastal waters of the Mediterranean and Eastern Atlantic
Scientific name: Serranus hepatus
Name: Brown Damsel
Order: Perciformes
Habitat: Marine
Scientific name: Dascyllus marginatus
Name: Brown Disc
Order: Perciformes
Habitat: Freshwater rivers in South America
Scientific name: Symphysodon aequifasciatus
Name: Brown Dottyback
Order: Perciformes
Habitat: Marine
Scientific name: Pseudochromis fuscus
Name: Brown Dusky Shark
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Carcharhinus obscurus
Name: Brown Garden Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Heteroconger longissimus
Name: Brown Goldeneye
Order: Perciformes
Habitat: Marine
Scientific name: Bregmaceros cantori
Name: Brown Irish Lord
Order: Scorpaeniformes
Habitat: Marine temperate waters of the Northeast Pacific
Scientific name: Hemilepidotus spinosus
Name: Brown Knifefish
Order: Gymnotiformes
Habitat: Freshwater
Scientific name: Apteronotus albifrons
Name: Brown Pomfret
Order: Perciformes
Habitat: Marine
Scientific name: Brama brama
Name: Brown Razorfish
Order: Perciformes
Habitat: Marine
Scientific name: Xyrichtys novacula
Name: Brown Recluse
Order: Araneae
Habitat: Terrestrial
Scientific name: Loxosceles reclusa
Name: Brown Smooth-Hound
Order: Carcharhiniformes
Habitat: Marine
Scientific name: Mustelus henlei
Name: Brown Spotted Wrasse
Order: Perciformes
Habitat: Marine
Scientific name: Symphodus tangianus
Name: Brown Surgeonfish
Order: Perciformes
Habitat: Marine
Scientific name: Acanthurus nigricans
Name: Brown Tinkerfish
Order: Perciformes
Habitat: Marine
Scientific name: Starksia stigma
Name: Brown Trout
Order: Salmoniformes
Habitat: Freshwater/Brackish
Scientific name: Salmo trutta
Name: Brownbanded Bamboo Shark
Order: Orectolobiformes
Habitat: Marine
Scientific name: Chiloscyllium punctatum
Name: Brownbanded Moray
Order: Anguilliformes
Habitat: Marine
Scientific name: Gymnothorax undulatus
Name: Bucktooth Tetra
Order: Characiformes
Habitat: Freshwater
Scientific name: Myleus schomburgkii
Name: Buffalo Fish
Order: Characiformes
Habitat: Freshwater
Scientific name: Ictiobus (genus)
Name: Buffalo Scad
Order: Perciformes
Habitat: Marine tropical waters of the Indo-Pacific
Scientific name: Carangoides buchanani
Name: Buffalo Sculpin
Order: Scorpaeniformes
Habitat: Marine
Scientific name: Enophrys bison
Name: Bugeye Trevally
Order: Carangiformes
Habitat: Marine
Scientific name: Selar crumenophthalmus
Name: Bull Shark
Order: Carcharhiniformes
Habitat: Marine/Freshwater
Scientific name: Carcharhinus leucas
Name: Bulldog Batfish
Order: Perciformes
Habitat: Marine
Scientific name: Platax boersii
Name: Bullen Shark
Order: Carcharhiniformes
Habitat: Marine/Freshwater
Scientific name: Carcharhinus leucas
Name: Bullhead
Order: Scorpaeniformes
Habitat: Freshwater
Scientific name: Cottus gobio
Name: Bullhead Catfish
Order: Siluriformes
Habitat: Freshwater rivers and lakes in North America
Scientific name: Ameiurus
Name: Bullseye Puffer
Order: Tetraodontiformes
Habitat: Marine
Scientific name: Sphoeroides spengleri
Name: Bullseye Snake Eel
Order: Anguilliformes
Habitat: Marine
Scientific name: Myrichthys maculosus
Name: Bultung
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Garra ceylonensis
Name: Bumalo
Order: Perciformes
Habitat: Marine coastal waters of the Eastern Atlantic and Mediterranean
Scientific name: Boops boops
Name: Bumblebee Catfish
Order: Siluriformes
Habitat: Freshwater rivers and streams in South America
Scientific name: Microglanis iheringi
Name: Bumblebee Goby
Order: Gobiiformes
Habitat: Brackish and freshwater swamps in Southeast Asia
Scientific name: Brachygobius doriae
Name: Bundu Barb
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Barbus paludinosus
Name: Burbot
Order: Gadiformes
Habitat: Freshwater
Scientific name: Lota lota
Name: Burgess Butterflyfish
Order: Perciformes
Habitat: Marine
Scientific name: Chaetodon burgessi
Name: Burma Gara
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Garra burmanica
Name: Burmese Border Loach
Order: Cypriniformes
Habitat: Freshwater
Scientific name: Botia histrionica
Name: Burrfish
Order: Tetraodontiformes
Habitat: Marine tropical and subtropical waters worldwide
Scientific name: Chilomycterus reticulatus
Name: Burrowing Goby
Order: Gobiiformes
Habitat: Marine
Scientific name: Trypauchenichthys luridus
Name: Bushynose Pleco
Order: Siluriformes
Habitat: Freshwater
Scientific name: Ancistrus cirrhosus
Name: Butte Copor
Order: Cyprinidiformes
Habitat: Freshwater
Scientific name: Copora (genus)
Name: Butter Hamlet
Order: Perciformes
Habitat: Marine tropical reefs in the Western Atlantic
Scientific name: Hypoplectrus unicolor
Name: Butter Mackerel
Order: Scombriformes
Habitat: Marine
Scientific name: Pneumatophorus japanese
Name: Butterfish
Order: Perciformes
Habitat: Marine
Scientific name: Pholis gunnellus
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Name: Butterfish (Carolina)
Order: Perciformes
Habitat: Marine
Scientific name: Peprilus triacanthus
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Name: Butterfish (Japanese)
Order: Perciformes
Habitat: Marine
Scientific name: Psenopsis anomala
Name: Butterfly Fish
Order: Perciformes
Habitat: Marine tropical reefs worldwide
Scientific name: Chaetodon
Name: Butterfly Ray
Order: Myliobatiformes
Habitat: Marine
Scientific name: Gymnura
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Name: Butterfly Ray (Smooth)
Order: Myliobatiformes
Habitat: Marine
Scientific name: Gymnura altavela
Name: Butterflyfish
Order: Perciformes
Habitat: Marine
Scientific name: Chaetodon capistratus
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Name: Butterflyfish (Bannerfish)
Order: Perciformes
Habitat: Marine
Scientific name: Heniochus acuminatus
Name: Buzzard Jawfish
Order: Perciformes
Habitat: Marine
Scientific name: Opistognathus macrognathus
Name: Bynoe's Goby
Order: Gobiiformes
Habitat: Freshwater/Brackish
Scientific name: Stigmatogobius bynoei
Name: Bytez Goby
Order: Gobiiformes
Habitat: Freshwater
Scientific name: Rhinogobius giurinus
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Backwater Killifish | Cyprinodontiformes | Freshwater | Fundulus nottii |
| Bahama Starfish Goby | Gobiiformes | Marine | Asterropteryx striata |
| Baikal Oilfish | Scorpaeniformes | Freshwater | Comephorus baicalensis |
| Bailer | Gastropoda | Marine shallow waters of the Indo-Pacific | Melo melo |
| Bairdiella | Perciformes | Marine | Bairdiella icistia |
| Bala Shark | Cypriniformes | Freshwater rivers and streams in Southeast Asia | Balantiocheilos melanopterus |
| Balac | Cypriniformes | Freshwater | Puntius binotatus |
| Baleen Whale | Cetacea | Marine | Mysticeti (suborder) |
| Ballan Wrasse | Perciformes | Marine rocky shores and kelp beds in the Northeast Atlantic | Labrus bergylta |
| Ballyhoo | Beloniformes | Marine | Hemiramphus brasiliensis |
| Balon's Perch | Perciformes | Freshwater | Gymnocephalus baloni |
| Bambara | Characiformes | Freshwater | Hydrocynus brevis |
| Bamboo Shark | Orectolobiformes | Marine tropical and subtropical waters of the Indo-Pacific | Chiloscyllium punctatum |
| Bambusea | Lamniformes | Marine | Chiloscyllium punctatum |
| Banded Archerfish | Perciformes | Brackish | Toxotes jaculatrix |
| Banded Butterflyfish | Perciformes | Saltwater | Chaetodon striatus |
| Banded Gourami | Anabantiformes | Freshwater | Trichogaster fasciata |
| Banded Killifish | Cyprinodontiformes | Freshwater | Fundulus diaphanus |
| Banded Knifefish | Gymnotiformes | Freshwater | Gymnotus carapo |
| Banded Kory | Siluriformes | Freshwater rivers and streams in South America | Corydoras schultzei |
| Banded Leporinus | Characiformes | Freshwater | Leporinus fasciatus |
| Banded Loach | Cypriniformes | Freshwater | Botia kubotai |
| Banded Moray | Anguilliformes | Marine | Gymnothorax isingteena |
| Banded Morwong | Perciformes | Marine temperate waters of Australia | Cheilodactylus spectabilis |
| Banded Pangasius | Siluriformes | Freshwater | Pangasius polyuranodon |
| Banded Peacock Bass | Cichliformes | Freshwater | Cichla pleiozona |
| Banded Peacock Cichlid | Perciformes | Freshwater | Aulonocara stuartgranti |
| Banded Pencilfish | Characiformes | Freshwater | Nannostomus espei |
| Banded Pipefish | Syngnathiformes | Marine tropical reefs in the Indo-Pacific | Dunckerocampus dactyliophorus |
| Banded Rainbowfish | Atheriniformes | Freshwater | Melanotaenia trifasciata |
| Banded Scat | Perciformes | Brackish/Freshwater | Scatophagus argus |
| Banded Snake Eel | Anguilliformes | Marine | Myrichthys colubrinus |
| Banded Sole | Pleuronectiformes | Marine temperate and tropical waters worldwide | Trachypterus trachypterus |
| Banded Stingray | Myliobatiformes | Marine | Himantura uarnak |
| Banded Sunfish | Perciformes | Freshwater | Enneacanthus obesus |
| Banded Tigerfish | Characiformes | Freshwater | Hydrocynus vittatus |
| Banded Trumpeter | Perciformes | Marine | Pelates sexlineatus |
| Banded Whiting | Perciformes | Marine temperate waters of Australia | Sillago bassensis |
| Bandtail Goatfish | Perciformes | Marine | Upeneus taeniopterus |
| Banggai Cardinalfish | Perciformes | Marine | Pterapogon kauderni |
| Banjo Catfish | Siluriformes | Freshwater rivers and streams in South America | Bunocephalus coracoideus |
| Banjul Shark | Carcharhiniformes | Marine | Carcharhinus banjulensis |
| Bank Sea Bass | Perciformes | Marine | Centropristis ocyurus |
| Bank Seabass | Perciformes | Marine | Centropristis ocyurus |
| Baqueta | Perciformes | Marine | Epinephelus analogus |
| Barb | Cypriniformes | Freshwater rivers and lakes in Asia and Africa | Puntius |
| Barbel | Cypriniformes | Freshwater | Barbus barbus |
| Barbel Chub | Cypriniformes | Freshwater | Mylocheilus caurinus |
| Barbel Snapper | Perciformes | Marine | Lutjanus barbonico |
| Barbeled Dragonfish | Stomiiformes | Deep Marine | Stomias boa |
| Barbled Grunter | Perciformes | Freshwater/Brackish | Mesopristes argenteus |
| Barbour's Seahorse | Syngnathiformes | Marine | Hippocampus barbouri |
| Barbu | Anabantiformes | Freshwater | Betta pugnax |
| Bardet's Snake Eel | Anguilliformes | Marine | Ophichthus bardeti |
| Bareye Grunt | Perciformes | Marine | Pomadasys argyreus |
| Barfin Plaice | Pleuronectiformes | Marine | Pleuronectes quadrituberculatus |
| Bargibant's Pygmy Seahorse | Syngnathiformes | Marine | Hippocampus bargibanti |
| Barking Gourami | Anabantiformes | Freshwater | Trichopsis vittata |
| Barnard's Goby | Gobiiformes | Marine | Gobiodon histrio |
| Barracuda | Perciformes | Marine tropical and subtropical waters worldwide | Sphyraena barracuda |
| Barramundi | Perciformes | Freshwater and estuarine waters in the Indo-Pacific | Lates calcarifer |
| Barred Flagtail | Perciformes | Freshwater/Brackish | Kuhlia mugil |
| Barred Hamlet | Perciformes | Marine | Hypoplectrus puella |
| Barred Knifejaw | Perciformes | Marine | Oplegnathus fasciatus |
| Barred Parore | Perciformes | Marine | Girella zebra |
| Barred Pencil Wrasse | Perciformes | Marine | Cheilio inermis |
| Barred Sandperch | Perciformes | Marine | Parapercis coarctata |
| Barred Seabass | Perciformes | Marine | Lateolabrax latus |
| Barred Soapfish | Perciformes | Marine | Rypticus subbifrenatus |
| Barreleye | Argentiniformes | Deep Marine | Macropinna microstoma |
| Barrelfish | Perciformes | Marine | Hyperoglyphe perciformis |
| Basketmouth | Osteoglossiformes | Freshwater | Datnioides microlepis |
| Basking Shark | Lamniformes | Marine temperate waters worldwide | Cetorhinus maximus |
| Bass | Perciformes | Freshwater and marine waters worldwide | Micropterus salmoides |
| Bassariscus | Perciformes | Freshwater (Unconfirmed as a fish) | Bassariscus astutus |
| Basslet | Perciformes | Marine | Gramma loreto |
| Bastard Halibut | Pleuronectiformes | Marine | Paralichthys californicus |
| Bat Ray | Myliobatiformes | Marine | Myliobatis californica |
| Batavian Mackerel | Scombriformes | Marine | Rastrelliger brachysoma |
| Batfish | Ostraciiformes | Marine tropical and subtropical waters of the Indo-Pacific | Platax orbicularis |
| Batfish (Atlantic) | Lophiiformes | Marine | Ogcocephalus nasutus |
| Batfish (Ogcocephalus) | Lophiiformes | Marine | Ogcocephalus corniger |
| Batfish (Platax) | Perciformes | Saltwater | Platax orbicularis |
| Batfish (Spotted) | Lophiiformes | Marine | Halieutichthys aculeatus |
| Batfish (Teira) | Perciformes | Marine | Platax teira |
| Bathyacmaea | Patellogastropoda | Marine (Deep Sea) | Bathyacmaea |
| Baxter's Bass | Perciformes | Marine | Centropristis fuscula |
| Bay Goby | Gobiiformes | Marine | Lepidogobius lepidus |
| Bay Pipefish | Syngnathiformes | Marine | Syngnathus leptorhynchus |
| Beaked Coralfish | Perciformes | Marine | Chelmon rostratus |
| Beaked Sandfish | Mugiliformes | Marine | Gonorynchus gonorynchus |
| Bearded Brotula | Ophidiiformes | Marine deep waters worldwide | Brotula barbata |
| Bearded Brotula (Deepwater) | Ophidiiformes | Marine (Deepwater) | Barathronus affinis |
| Bearded Brotula Bass | Ophidiiformes | Deep Marine | Pseudorhegma polynema |
| Bearded Brotula Basslet | Ophidiiformes | Saltwater | Brotulotaenia nudipes |
| Bearded Dragonfish | Stomiiformes | Marine (Deepwater) | Stomias boa ferox |
| Bearded Seahorse | Syngnathiformes | Marine tropical waters of the Indo-Pacific | Hippocampus barbouri |
| Beardfish | Perciformes | Marine deep waters worldwide | Polymixia nobilis |
| Beardfish (Owstonia) | Perciformes | Marine (Deep Sea) | Owstonia |
| Beardfish (Polymixia) | Polymixiiformes | Marine (Deep Sea) | Polymixia |
| Beardie (Lacefin) | Ophidiiformes | Deep Marine | Polymixia longispina |
| Beardied Scapheles | Polymixiiformes | Marine | Polymixia nobilis |
| Beau Gummich | Perciformes | Marine | Epinephelus reticulatus |
| Beautiful Snoutfish | Scorpaeniformes | Marine | Podothecus sachi |
| Beka Sturgeon | Acipenseriformes | Freshwater/Brackish | Acipenser nudiventris |
| Belone | Beloniformes | Saltwater | Belone belone |
| Belontia | Perciformes | Freshwater | Belontia signata |
| Beluga Sturgeon | Acipenseriformes | Freshwater and brackish waters of the Caspian and Black Sea basins | Huso huso |
| Benchley's Anemonefish | Perciformes | Marine | Amphiprion benchleyi |
| Bengal Barb | Cypriniformes | Freshwater | Puntius terio |
| Bengal Brotula | Ophidiiformes | Deep Marine | Brotula multibarbata |
| Bengal Sergeant | Perciformes | Marine | Abudefduf bengalensis |
| Bengali Loach | Cypriniformes | Freshwater | Botia dario |
| Bengali Scat | Perciformes | Brackish and marine waters in the Indo-Pacific | Scatophagus argus |
| Beni Cichlid | Cichliformes | Freshwater | Cichla orinocensis |
| Bennet's Dragonet | Perciformes | Marine | Synchiropus bennetti |
| Benthic Grunter | Perciformes | Marine | Pomadasys opercularis |
| Bering Wolffish | Perciformes | Marine | Anarhichas orientalis |
| Bering Wolffish (Northern) | Perciformes | Marine | Anarhichas orientalis |
| Berkley Bream | Perciformes | Marine | Mylio australis |
| Bermuda Chub | Perciformes | Marine | Kyphosus sectatrix |
| Besudach | Osmeriformes | Freshwater/Brackish | Osmerus mordax dentex |
| Betta | Perciformes | Freshwater still and slow-moving waters in Southeast Asia | Betta splendens |
| Bichir | Polypteriformes | Freshwater | Polypteridae (family) |
| Bichir (Polypterus) | Polypteriformes | Freshwater | Polypterus |
| Bicolor Blenny | Perciformes | Marine tropical reefs in the Indo-Pacific | Ecsenius bicolor |
| Bicolor Damselfish | Perciformes | Marine tropical reefs in the Western Atlantic | Stegastes partitus |
| Bicolor Goatfish | Perciformes | Marine | Parupeneus barberinus |
| Bicolour Angelfish | Perciformes | Saltwater | Centropyge bicolor |
| Bicolour Cleaning Wrasse | Perciformes | Marine | Labroides bicolor |
| Big Skate | Rajiformes | Marine | Raja binoculata |
| Bigeye Barracuda | Perciformes | Marine | Sphyraena forsteri |
| Bigeye Croaker | Perciformes | Marine | Micropogonias megalops |
| Bigeye Houndshark | Carcharhiniformes | Marine | Iago omanensis |
| Bigeye Kingfish | Carangiformes | Marine | Caranx sexfasciatus |
| Bigeye Pipefish | Syngnathiformes | Marine | Syngnathus pelagicus |
| Bigeye Sand Tiger | Lamniformes | Marine | Odontaspis norrisi |
| Bigeye Scad | Carangiformes | Marine | Selar crumenophthalmus |
| Bigeye Snapper | Perciformes | Marine | Lutjanus lutjanus |
| Bigeye Thresher | Lamniformes | Marine | Alopias superciliosus |
| Bigeye Thresher Shark | Lamniformes | Marine | Alopias superciliosus |
| Bigeye Tuna | Perciformes | Marine tropical and subtropical waters worldwide | Thunnus obesus |
| Bigeyed Thresher Shark | Lamniformes | Marine | Alopias superciliosus |
| Bigeyed Tuna | Perciformes | Marine | Thunnus obesus |
| Bighead Carp | Cypriniformes | Freshwater | Hypophthalmichthys nobilis |
| Bigmouth Bass | Perciformes | Freshwater | Micropterus salmoides |
| Bigmouth Buffalo | Cypriniformes | Freshwater lakes and rivers in North America | Ictiobus cyprinellus |
| Bigmouth Sleeper | Gobiiformes | Freshwater/Brackish | Gobiomorus dormitor |
| Bigmouth Sole | Pleuronectiformes | Marine | Hippoglossoides elassodon |
| Bignose Croaker | Perciformes | Marine | Johnius macrorhynus |
| Bignose Shark | Carcharhiniformes | Marine tropical and subtropical waters worldwide | Carcharhinus altimus |
| Bigscale | Beryciformes | Marine deep waters tropical and temperate worldwide | Melamphaes |
| Bigscale Beryx | Beryciformes | Marine | Beryx decadactylus |
| Bigscale Snaggletooth | Stomiiformes | Marine (Deep Sea) | Astronesthes niger |
| Bigscale Snapper | Perciformes | Marine | Lutjanus johnii |
| Bigscale Thresher | Lamniformes | Marine | Alopias vulpinus |
| Bigspine Croaker | Perciformes | Marine | Micropogonias altipinnis |
| Bika | Cypriniformes | Freshwater | Labeo pangasius |
| Billfish | Beloniformes | Marine | Makaira nigricans |
| Billfish (general term) | Istiophoriformes | Marine | Istiophorus platypterus |
| Bimac Cichlid | Perciformes | Freshwater | Retroculus argenteus |
| Bimaculated Sole | Pleuronectiformes | Marine | Solea bimaculata |
| Bimaculatus Anthias | Perciformes | Marine | Pseudanthias bimaculatus |
| Bimaculatus Cichlid | Cichliformes | Freshwater | Hemichromis bimaculatus |
| Binga | Perciformes | Marine coastal waters of West Africa | Ethmalosa fimbriata |
| Binga Blenny | Blenniiformes | Marine | Ophioblennius atlanticus |
| Bingi | Perciformes | Saltwater | Sciaena bathybius |
| Binnil | Cypriniformes | Freshwater | Labeo fimbriatus |
| Bird Wrasse | Perciformes | Marine | Gomphosus varius |
| Birdfish | Symphysanodontiformes | Marine | Symphysanodon typus |
| Birdsnout Sand Tiger | Lamniformes | Marine | Odontaspis ferox |
| Bireli | Cypriniformes | Freshwater | Labeo boga |
| Biscay Goby | Gobiiformes | Marine | Gobius xanthocephalus |
| Bishop Fish | Perciformes | Marine deep waters in tropical and subtropical regions | Symphysanodon typus |
| Bishop Rockfish | Scorpaeniformes | Marine | Sebastes bishopi |
| Bismarck Flying Fox | Cypriniformes | Freshwater | Epalzeorhynchos bicolor |
| Bismarck Garfish | Beloniformes | Freshwater | Arrhamphus sclerolepis |
| Bismarck Herring | Clupeiformes | Marine | Clupea harengus membras |
| Bison Fish | Siluriformes | Freshwater | Oxydoras niger |
| Bison Goby | Gobiiformes | Marine | Gobiopsis bison |
| Bitterling | Cypriniformes | Freshwater rivers and lakes in Eurasia | Rhodeus sericeus |
| Biwa Lake Catfish | Siluriformes | Freshwater | Silurus biwae |
| Black Angel Shark | Squatiniformes | Marine | Squatina niger |
| Black Angler | Lophiiformes | Deep Marine | Melanocetus johnsonii |
| Black Anglerfish | Lophiiformes | Marine deep waters worldwide | Lophius niger |
| Black Arrowhead Toadfish | Batrachoidiformes | Marine | Opsanus beta |
| Black Banded Sea Perch | Perciformes | Marine | Lutjanus fulvus |
| Black Bar Endler | Cyprinodontiformes | Freshwater | Poecilia wingei |
| Black Bass | Perciformes | Freshwater rivers and lakes in North America | Micropterus |
| Black Bass (Large Eye) | Perciformes | Freshwater | Micropterus coosae |
| Black Brotula | Ophidiiformes | Marine | Brotula barbata |
| Black Cardinalfish | Perciformes | Marine | Apogonichthys puncticulatus |
| Black Damselfish | Perciformes | Marine | Neoglyphidodon melas |
| Black Dogfish | Squaliformes | Marine | Centroscyllium fabricii |
| Black Dragonfish | Stomiiformes | Marine deep waters worldwide | Idiacanthus atlanticus |
| Black Dragonfish (Deepsea) | Stomiiformes | Marine (Deepwater) | Idiacanthus antrostomus |
| Black Drum | Perciformes | Marine | Pogonias cromis |
| Black Eeltail Catfish | Siluriformes | Marine/Brackish | Plotosus canius |
| Black Fin Shark | Carcharhiniformes | Marine | Carcharhinus limbatus |
| Black Ghost Knifefish | Gymnotiformes | Freshwater rivers in South America | Apteronotus albifrons |
| Black Goblinfish | Scorpaeniformes | Marine | Inimicus didactylus |
| Black Grouper | Perciformes | Marine | Mycteroperca bonaci |
| Black Grubfish | Perciformes | Marine | Congrogadus subducens |
| Black Grunt | Perciformes | Marine | Haemulon bonariense |
| Black Guitarfish | Rhinopristiformes | Marine | Glaucostegus microlepis |
| Black Guppy | Poeciliidae | Freshwater | Poecilia reticulata (melanistic variant) |
| Black Hake | Gadiformes | Marine | Merluccius polli |
| Black Handfish | Lophiiformes | Marine | Brachionichthys niger |
| Black Hawkfish | Perciformes | Marine | Paracirrhites forsteri |
| Black Hiding Goby | Gobiiformes | Marine | Cryptocentrus pavoninoides |
| Black Jack | Carangiformes | Marine | Caranx lugubris |
| Black Jumper | Perciformes | Marine | Malacanthus niger |
| Black Kingfish | Carangiformes | Marine | Rachycentron canadum |
| Black Knife Fish | Gymnotiformes | Freshwater | Apteronotus albifrons |
| Black Lancer | Perciformes | Marine | Lethrinus nebulosus |
| Black Margate | Perciformes | Marine | Anisotremus surinamensis |
| Black Marlin | Perciformes | Marine tropical and subtropical waters of the Indo-Pacific | Makaira indica |
| Black Molly | Cyprinodontiformes | Freshwater and brackish waters of Central and South America | Poecilia sphenops |
| Black Molly (Spotted) | Cyprinodontiformes | Freshwater/Brackish | Poecilia sphenops var. spotted |
| Black Molly (Wild form) | Cyprinodontiformes | Freshwater | Poecilia sphenops |
| Black Molly (Wild) | Cyprinodontiformes | Freshwater/Brackish | Poecilia sphenops |
| Black Mudskipper | Gobiiformes | Brackish/Marine | Periophthalmus modestus |
| Black Neon Tetra | Characiformes | Freshwater | Hyphessobrycon herbertaxelrodi |
| Black Pacu | Characiformes | Freshwater | Colossoma macropomum |
| Black Paradise Fish | Anabantiformes | Freshwater | Macropodus concolor |
| Black Perch | Perciformes | Marine rocky reefs of the Northeast Pacific | Embiotoca jacksoni |
| Black Phantom Tetra | Characiformes | Freshwater | Hyphessobrycon megalopterus |
| Black Pipefish | Syngnathiformes | Marine | Syngnathus fuscus |
| Black Pomfret | Perciformes | Marine | Parastromateus niger |
| Black Rabbitfish | Perciformes | Marine | Siganus niger |
| Black Rake-Gilled Hagfish | Myxiniformes | Deep Marine | Eptatretus cirrhatus |
| Black River Bass | Perciformes | Freshwater | Micropterus punctulatus |
| Black Ruby Barb | Cypriniformes | Freshwater | Pethia nigrofasciata |
| Black Saddle Coralgroup | Perciformes | Marine | Plectropomus laevis |
| Black Sea Bass | Perciformes | Marine coastal waters of the Western Atlantic | Centropristis striata |
| Black Sea Bream | Perciformes | Marine coastal waters of the Eastern Atlantic and Mediterranean | Spondyliosoma cantharus |
| Black Seabass | Perciformes | Marine | Centropristis striata |
| Black Sharkminnow | Cypriniformes | Freshwater | Labeo chrysophekadion |
| Black Skate | Rajiformes | Marine | Dipturus flaveolus |
| Black Skirt Tetra | Characiformes | Freshwater | Gymnocorymbus ternetzi |
| Black Snakehead | Perciformes | Freshwater | Channa melasoma |
| Black Snapper | Perciformes | Marine | Apsilus dentatus |
| Black Snapper (Lutjanus) | Perciformes | Marine | Lutjanus griseus |
| Black Soldierfish | Beryciformes | Marine | Myripristis murdjan |
| Black Spotted Goby | Gobiiformes | Marine | Gobius niger |
| Black Spotted Moray | Anguilliformes | Marine | Gymnothorax fimbriatus |
| Black Spotted Puffer | Tetraodontiformes | Marine | Arothron nigropunctatus |
| Black Spotted Toadie | Tetraodontiformes | Marine | Torquigener nigropunctatus |
| Black Surgeonfish | Perciformes | Marine | Acanthurus nigricans |
| Black Swallowtail | Perciformes | Marine | Genyagnus monopterygius |
| Black Swellshark | Carcharhiniformes | Marine temperate waters of Australia | Cephaloscyllium isabellum |
| Black Tetra | Characiformes | Freshwater | Gymnocorymbus ternetzi |
| Black Tiger Barb | Cypriniformes | Freshwater | Puntigrus tetrazona |
| Black Triggerfish | Tetraodontiformes | Marine tropical reefs in the Indo-Pacific | Melichthys niger |
| Black Umbrella Mouth | Perciformes | Marine deep waters worldwide | Malacanthus brevirostris |
| Black Unicornfish | Perciformes | Marine | Naso unicornis |
| Black Velvet Angelfish | Perciformes | Marine | Chaetodontoplus melanosoma |
| Black Westralian Bull Shark | Carcharhiniformes | Brackish/Marine | Carcharhinus leucas (Western Australia) |
| Black-banded Sea Perch | Perciformes | Marine tropical reefs in the Caribbean | Hypoplectrus nigricans |
| Black-edged Barbel | Cypriniformes | Freshwater | Barbus prespensis |
| Black-edged Lyretail | Perciformes | Marine | Variola louti |
| Black-handed Parrotfish | Perciformes | Marine | Scarus niger |
| Black-headed Mackerel | Scombriformes | Marine | Rastrelliger brachysoma |
| Black-spotted Porcupinefish | Tetraodontiformes | Marine | Diodon holocanthus |
| Black-spotted Puffer | Tetraodontiformes | Marine | Arothron nigropunctatus |
| Blackbanded Sunfish | Perciformes | Freshwater ponds and swamps in Eastern North America | Enneacanthus chaetodon |
| Blackbar Drum | Perciformes | Marine | Pareques iwamotoi |
| Blackbar Soldierfish | Beryciformes | Marine tropical reefs in the Atlantic | Myripristis jacobus |
| Blackbellied Angler | Lophiiformes | Marine deep waters worldwide | Haplophryne mollis |
| Blackbelly Rosefish | Perciformes | Marine | Helicolenus dactylopterus |
| Blackcheek Moray | Anguilliformes | Marine | Gymnothorax kontik |
| Blackcheek Tonguefish | Pleuronectiformes | Marine | Symphurus plagiusa |
| Blackedge Moray | Anguilliformes | Marine | Gymnothorax nigromarginatus |
| Blackeye Goby | Gobiiformes | Marine | Coryphopterus nicholsii |
| Blackfaced Blenny | Blenniiformes | Marine | Tripterygius etheostoma |
| Blackfin Angelfish | Perciformes | Marine | Apolemichthys arcuatus |
| Blackfin Barracuda | Scombriformes | Marine | Sphyraena qenie |
| Blackfin Croaker | Perciformes | Saltwater | Micropogonias megalops |
| Blackfin Grouper | Perciformes | Marine | Mycteroperca bonaci |
| Blackfin Grubfish | Perciformes | Marine | Parapercis allporti |
| Blackfin Hogfish | Perciformes | Marine | Bodianus loxozonus |
| Blackfin Icefish | Perciformes | Marine (Antarctic) | Chaenocephalus aceratus |
| Blackfin Lyretail | Perciformes | Marine | Variola punctulata |
| Blackfin Shark | Carcharhiniformes | Marine | Carcharhinus limbatus |
| Blackfin Snake Eel | Anguilliformes | Marine | Ophichthus punctifer |
| Blackfin Snapper | Perciformes | Marine | Lutjanus buccanella |
| Blackfin Sweeper | Perciformes | Marine | Pempheris schomburgkii |
| Blackfin Tuna | Perciformes | Marine tropical and subtropical waters of the Western Atlantic | Thunnus atlanticus |
| Blackfoot Anthias | Perciformes | Marine | Pseudanthias huchtii |
| Blackgill Rockfish | Scorpaeniformes | Marine | Sebastes melanostomus |
| Blackhand Paradise Fish | Anabantiformes | Freshwater | Macropodus concolor |
| Blackmargined Moray | Anguilliformes | Marine | Gymnothorax fimbriatus |
| Blackmouth Cat Shark | Carcharhiniformes | Deep Marine | Galeus melastomus |
| Blackmouth Catshark | Carcharhiniformes | Marine | Galeus melastomus |
| Blackmouth Croaker | Perciformes | Marine | Atrobucca nibe |
| Blackmouth Gurnard | Scorpaeniformes | Marine | Lophius budegassa |
| Blacknose Shark | Carcharhiniformes | Marine tropical and subtropical waters of the Western Atlantic | Carcharhinus acronotus |
| Blacknose Shark (Deepwater) | Carcharhiniformes | Deep Marine | Carcharhinus acronotus |
| Blacknose Shark (Pacific) | Carcharhiniformes | Marine | Carcharhinus acronotus (Pacific population) |
| Blackspot Goatfish | Perciformes | Marine | Parupeneus spilurus |
| Blackspot Picarel | Perciformes | Marine | Spicara melanurus |
| Blackspot Sergeant | Perciformes | Marine | Abudefduf sordidus |
| Blackspot Shark | Carcharhiniformes | Marine | Carcharhinus sealei |
| Blackspot Snapper | Perciformes | Marine tropical reefs in the Indo-Pacific | Lutjanus fulvus |
| Blackspot Squirrelfish | Beryciformes | Marine tropical reefs in the Indo-Pacific | Sargocentron coruscum |
| Blackspotted Catshark | Carcharhiniformes | Marine (Deep Sea) | Apristurus macrorhynchus |
| Blackspotted Croaker | Perciformes | Marine | Protonibea diacanthus |
| Blackspotted Moray | Anguilliformes | Marine tropical reefs in the Indo-Pacific | Gymnothorax buroensis |
| Blackspotted Puffer | Tetraodontiformes | Marine tropical reefs in the Indo-Pacific | Arothron nigropunctatus |
| Blackstripe Cardinalfish | Gobiiformes | Marine | Apogon nigrofasciatus |
| Blacktail Calfbeak | Tetraodontiformes | Marine | Rhinecanthus rectangulus |
| Blacktail Goby | Gobiiformes | Marine | Acanthogobius flavimanus |
| Blacktail Shark | Carcharhiniformes | Marine tropical and subtropical waters of the Indo-Pacific | Carcharhinus amblyrhynchoides |
| Blacktail Shiner | Cypriniformes | Freshwater | Cyprinella venusta |
| Blacktail Snapper | Perciformes | Marine | Lutjanus fulvus |
| Blacktip Reef Shark | Carcharhiniformes | Marine | Carcharhinus melanopterus |
| Blacktip Shark | Carcharhiniformes | Marine | Carcharhinus limbatus |
| Blackwedge Butterflyfish | Perciformes | Marine | Chaetodon falcula |
| Blackwing Flyingfish | Beloniformes | Saltwater | Hirundichthys rondeletii |
| Blackwing Searobin | Perciformes | Marine temperate waters of the Western Pacific | Pterygotrigla picta |
| Blada | Perciformes | Marine | Sardinella maderensis |
| Blanchard's Sole | Pleuronectiformes | Marine | Pleuronectes perpureus |
| Blass' Hogfish | Perciformes | Marine | Bodianus blassii |
| Blass's Sole | Pleuronectiformes | Marine | Solea blassiana |
| Bleak | Cypriniformes | Freshwater | Alburnus alburnus |
| Bleeding Heart Tetra | Characiformes | Freshwater | Hyphessobrycon erythrostigma |
| Blennie | Blenniiformes | Marine | Blenniidae (family) |
| Blenniella | Blenniiformes | Saltwater | Blenniella periophthalmus |
| Blennioid | Blenniiformes | Marine and brackish waters worldwide | Blennius |
| Blind Cave Fish | Characiformes | Freshwater caves in Mexico | Astyanax jordani |
| Blind Goby | Gobiiformes | Marine intertidal zones of California | Typhlogobius californiensis |
| Blind Shark | Orectolobiformes | Marine | Brachaelurus waddi |
| Blizzard Fish | Perciformes | Marine (Deepwater) | Rhigiophila dearborni |
| Bloater | Osmeriformes | Freshwater | Coregonus hoyi |
| Blobfish | Scorpaeniformes | Marine (Deep Sea) | Psychrolutes marcidus |
| Bloch's Codlet | Gadiformes | Marine | Bregmaceros macclellandii |
| Bloch's Goby | Gobiiformes | Marine tropical reefs in the Indo-Pacific | Gobiodon blochi |
| Blonde Ray | Rajiformes | Marine | Raja brachyura |
| Blood Parrot Cichlid | Cichliformes | Freshwater (Hybrid) | Amphilophus citrinellus x Cichlasoma synspilum |
| Bloodfin Tetra | Characiformes | Freshwater | Aphyocharax anisitsi |
| Bloodworm Goby | Gobiiformes | Marine | Discordipinna griessingeri |
| Blotched Catfish | Siluriformes | Freshwater | Synodontis clarias |
| Blotched Fantail Ray | Rajiformes | Marine | Taeniurops meyeni |
| Blue Angelfish | Perciformes | Marine tropical reefs in the Western Atlantic | Holacanthus bermudensis |
| Blue Bass | Perciformes | Marine coastal waters of the Western Atlantic | Centropristis philadelphica |
| Blue Blanquillo | Perciformes | Saltwater | Malacanthus plumieri |
| Blue Blubberlips | Perciformes | Marine | Plectorhinchus playfairi |
| Blue Chromis | Perciformes | Marine tropical reefs in the Western Atlantic | Chromis cyanea |
| Blue Damsel | Perciformes | Marine | Pomacentrus alleni |
| Blue Damselfish | Perciformes | Marine tropical reefs in the Indo-Pacific | Pomacentrus alleni |
| Blue Damselfish (Caribbean) | Perciformes | Marine | Abudefduf saxatilis |
| Blue Demoiselle | Perciformes | Marine | Chrysiptera cyanea |
| Blue Devil | Perciformes | Marine temperate reefs of Australia | Paraplesiops meleagris |
| Blue Dot Jawfish | Perciformes | Marine | Opistognathus rosenblatti |
| Blue Dot Stingray | Myliobatiformes | Marine | Neotrygon kuhlii |
| Blue Dragon | Gasterosteiformes | Saltwater | Eurypegasus draconis |
| Blue Eye Rainbowfish | Atheriniformes | Freshwater | Pseudomugil signifer |
| Blue Flounder | Pleuronectiformes | Marine | Paralichthys dentatus |
| Blue Gourami | Anabantiformes | Freshwater streams and lakes in Southeast Asia | Trichopodus trichopterus |
| Blue Guppy | Cyprinodontiformes | Freshwater | Poecilia reticulata |
| Blue Hake | Gadiformes | Marine | Macruronus novaezelandiae |
| Blue Hippo Tang | Perciformes | Marine | Paracanthurus hepatus |
| Blue Killifish | Cyprinodontiformes | Freshwater | Chriopeoides rana |
| Blue Lipped Sea Krait | Elapidae | Marine (Venomous Sea Snake – often confused as fish) | Laticauda laticaudata |
| Blue Lyretail Anthias | Perciformes | Marine | Pseudanthias squamipinnis |
| Blue Marlin | Perciformes | Marine tropical and temperate waters worldwide | Makaira nigricans |
| Blue Paradise Fish | Anabantiformes | Freshwater | Macropodus opercularis |
| Blue Parrotfish | Perciformes | Marine | Scarus coeruleus |
| Blue Ring Angelfish | Perciformes | Marine | Pomacanthus annularis |
| Blue Runner | Carangiformes | Marine | Caranx crysos |
| Blue Shark | Carcharhiniformes | Marine | Prionace glauca |
| Blue Spotted Jawfish | Perciformes | Marine | Opistognathus rosenblatti |
| Blue Spotted Ribbontail Ray | Myliobatiformes | Marine | Taeniurops lymma |
| Blue Tang | Perciformes | Marine tropical reefs in the Indo-Pacific | Paracanthurus hepatus |
| Blue Tilapia | Cichliformes | Freshwater | Oreochromis aureus |
| Blue Tuna | Perciformes | Marine temperate waters of the Southern Hemisphere | Thunnus maccoyii |
| Blue Whale | Cetacea | Marine | Balaenoptera musculus |
| Blueback Herring | Clupeiformes | Freshwater and marine waters of the Western Atlantic | Alosa aestivalis |
| Bluebanded Goby | Gobiiformes | Marine temperate reefs of California | Lythrypnus dalli |
| Bluefin Killifish | Cyprinodontiformes | Freshwater swamps and ponds in the Southeastern United States | Lucania goodei |
| Bluefin Trevally | Carangiformes | Marine | Caranx melampygus |
| Bluefin Tuna | Scombriformes | Marine | Thunnus thynnus |
| Bluefin Tuna (Southern) | Scombriformes | Marine | Thunnus maccoyii |
| Bluegill | Perciformes | Freshwater | Lepomis macrochirus |
| Bluegill Sunfish | Perciformes | Freshwater | Lepomis macrochirus |
| Bluehead Chub | Cypriniformes | Freshwater | Nocomis leptocephalus |
| Bluehead Wrasse | Perciformes | Marine tropical reefs in the Western Atlantic | Thalassoma bifasciatum |
| Bluespot Goby | Gobiiformes | Marine | Valenciennea strigata |
| Bluespotted Coral Grouper | Perciformes | Marine | Plectropomus maculatus |
| Bluespotted Guppy | Cyprinodontiformes | Freshwater | Poecilia reticulata (endler variant) |
| Bluespotted Mudskipper | Gobiiformes | Brackish/Marine | Boleophthalmus pectinirostris |
| Bluespotted Stingray | Myliobatiformes | Marine tropical shallow waters of the Indo-Pacific | Neotrygon kuhlii |
| Bluespotted Sunfish | Perciformes | Freshwater | Enneacanthus gloriosus |
| Bluestripe Pipefish | Syngnathiformes | Marine | Doryrhamphus excisus |
| Bluestripe Snapper | Perciformes | Marine tropical reefs in the Indo-Pacific | Lutjanus kasmira |
| Bluestriped Fangblenny | Blenniiformes | Marine | Plagiotremus rhinorhynchos |
| Bluey | Perciformes | Marine | Carangoides caeruleopinnatus |
| Blunthead Cichlid | Cichliformes | Freshwater | Tropheus moorii |
| Blunthead Wrasse | Perciformes | Marine | Thalassoma amblycephalum |
| Bluntnose Sixgill Shark | Hexanchiformes | Marine | Hexanchus griseus |
| Boa Cichlid | Cichliformes | Freshwater | Cichla intermedia |
| Boarfish (Deep-bodied) | Caproiformes | Deep Marine | Antigonia capros |
| Boarfish (Longspine) | Caproiformes | Marine | Capros aper |
| Bobtail Snipe Eel | Anguilliformes | Deep Marine | Cyema atrum |
| Bocaccio | Perciformes | Marine temperate waters of the Northeast Pacific | Sebastes paucispinis |
| Bodianus | Perciformes | Marine tropical reefs in the Atlantic | Bodianus pulchellus |
| Boga | Cypriniformes | Freshwater | Leuciscus idus |
| Bogardus' Frogfish | Lophiiformes | Marine | Antennarius bogardus |
| Bogue | Perciformes | Marine | Boops boops |
| Bombay Duck | Aulopiformes | Saltwater | Harpadon nehereus |
| Bonapart's Grunter | Perciformes | Marine/Brackish | Pomadasys argyreus |
| Bonaparte's Goby | Gobiiformes | Marine | Gobius bonapartei |
| Bonaparte's Wrasse | Perciformes | Marine | Bodianus bonaparti |
| Bonefish | Albuliformes | Marine tropical shallow waters worldwide | Albula vulpes |
| Bonito | Perciformes | Marine temperate and tropical waters worldwide | Sarda sarda |
| Bonito (Atlantic) | Scombriformes | Marine | Sarda sarda |
| Bonito Shark | Lamniformes | Marine | Isurus oxyrinchus |
| Bonnethead Shark | Carcharhiniformes | Marine | Sphyrna tiburo |
| Bonytail Chub | Cypriniformes | Freshwater rivers in the Southwestern United States | Gila elegans |
| Bork | Siluriformes | Freshwater | Pelteobagrus fulvidraco |
| Borneo Sucker | Cypriniformes | Freshwater | Gastromyzon |
| Boston Cod | Gadiformes | Marine | Gadus morhua |
| Boston Eel Pout | Perciformes | Marine | Zoarces americanus |
| Boston Mackerel | Scombriformes | Marine | Scomber scombrus |
| Bothidae (Left-Eyes Flounder) | Pleuronectiformes | Marine | Bothidae |
| Bottlenose Skate | Rajiformes | Marine | Rostroraja alba |
| Boulder Goby | Gobiiformes | Marine | Gobius cobitis |
| Boulenger's Bream | Characiformes | Freshwater | Brycinus nurse |
| Boulenger's Killifish | Cyprinodontiformes | Freshwater | Nothobranchius boulengeri |
| Bouri | Perciformes | Brackish/Marine | Liza subviridis |
| Bowfin | Amiiformes | Freshwater slow-moving waters in Eastern North America | Amia calva |
| Boxfish | Tetraodontiformes | Marine tropical reefs in the Indo-Pacific | Ostracion cubicus |
| Boxfish (Longhorn) | Tetraodontiformes | Marine | Lactoria cornuta |
| Bradford's Gourami | Anabantiformes | Freshwater | Trichopsis bradfordi |
| Brahminy Kitefish | Scorpaeniformes | Marine | Scorpaenopsis venosa |
| Brama | Scombriformes | Marine | Brama brama |
| Bramble Shark | Squaliformes | Marine | Echinorhinus brucus |
| Branch Perch | Perciformes | Freshwater | Lates mariae |
| Branched Moray | Anguilliformes | Marine | Gymnothorax isingteena |
| Brandon's Basslet | Perciformes | Marine (Deep Sea) | Lipogramma randelii |
| Brandt's Skate | Rajiformes | Saltwater | Okamejei brandtii |
| Brassy Drum | Perciformes | Marine | Sciaena trewavasae |
| Brassy Minnow | Cypriniformes | Freshwater | Hybognathus hankinsoni |
| Brazilian Flathead | Scorpaeniformes | Marine | Cociella punctata |
| Brazilian Flounder | Pleuronectiformes | Marine | Paralichthys patagonicus |
| Brazilian Grunt | Perciformes | Marine | Haemulon steindachneri |
| Brazilian Moray | Anguilliformes | Marine | Gymnothorax ocellatus |
| Brazilian Searobin | Scorpaeniformes | Marine | Prionotus rigonianus |
| Breaksea Cod | Perciformes | Marine | Epinephelides armatus |
| Bream | Cypriniformes | Freshwater lakes and rivers in Europe and Asia | Abramis brama |
| Bream (Silver) | Cypriniformes | Freshwater | Abramis brama |
| Bream (Western Yellowfin) | Perciformes | Marine | Acanthopagrus lylei |
| Breeding Gourami | Anabantiformes | Freshwater | Trichogaster trichopterus |
| Breeze Snapper | Perciformes | Marine | Lutjanus lutjanus |
| Brewer's Conger | Anguilliformes | Deep Marine | Bathycongrus dubius |
| Brichard's Lamprologus | Cichliformes | Freshwater lakes in East Africa | Neolamprologus brichardi |
| Brichardi Cichlid | Perciformes | Freshwater | Neolamprologus brichardi |
| Bridled Goby | Gobiiformes | Freshwater | Padogobius bonelli |
| Bridled Ternlet | Perciformes | Marine | Sphyraena novaehollandiae |
| Brill | Pleuronectiformes | Marine | Scophthalmus rhombus |
| Bristle Mouth | Stomiiformes | Marine deep waters worldwide | Cyclothone |
| Bristlefish | Stomiiformes | Marine | Stomias boa |
| Bristlemouth | Stomiiformes | Marine deep waters worldwide | Gonostoma denudatum |
| Bristlenose Catfish | Siluriformes | Freshwater | Ancistrus |
| Bristlenose Pleco | Siluriformes | Freshwater | Ancistrus (genus) |
| Bristletooth Surgeonfish | Perciformes | Marine | Ctenochaetus striatus |
| Bristletooth Tang | Perciformes | Marine | Ctenochaetus striatus |
| Brittle Starfish Fish | Perciformes | Marine | Carapus bermudensis |
| Broad Whitefish | Salmoniformes | Freshwater lakes and rivers in Northern Eurasia and North America | Coregonus nasus |
| Broadbanded Cardinalfish | Perciformes | Marine | Apogon compressus |
| Broadbanded Goby | Gobiiformes | Marine | Gobiodon rivulatus |
| Broadbanded Sardine | Clupeiformes | Marine | Sardinella lemuru |
| Broadbarred King Mackerel | Scombriformes | Marine | Scomberomorus semifasciatus |
| Broadbilled Swordfish | Xiphiiformes | Marine | Xiphias gladius |
| Broadstripe Cardinalfish | Perciformes | Marine | Apogon doederleini |
| Broken-stripe Goby | Gobiiformes | Marine | Priolepis semidoliata |
| Bronze Catfish | Siluriformes | Freshwater | Corydoras aeneus |
| Bronze Corydoras | Siluriformes | Freshwater rivers and streams in South America | Corydoras aeneus |
| Bronzestripe Grunter | Perciformes | Freshwater/Brackish | Mesopristes cancellatus |
| Brook Lamprey | Petromyzontiformes | Freshwater | Lampetra planeri |
| Brook Stickleback | Gasterosteiformes | Freshwater | Culaea inconstans |
| Brook Trout | Salmoniformes | Freshwater | Salvelinus fontinalis |
| Brooklyn Goby | Gobiiformes | Marine | Gobiosoma bosc |
| Broomtail Wrasse | Perciformes | Marine | Cheilinus lunulatus |
| Brotula (general) | Ophidiiformes | Marine | Brotula barbata |
| Brown Back Grunt | Perciformes | Marine | Haemulon aurolineatum |
| Brown Banded Bamboo Shark (deepwater) | Orectolobiformes | Marine | Chiloscyllium punctatum (uncommon deepwater variant) |
| Brown Bullhead | Siluriformes | Freshwater | Ameiurus nebulosus |
| Brown Bullhead Catfish | Siluriformes | Freshwater | Ameiurus nebulosus |
| Brown Comber | Perciformes | Marine coastal waters of the Mediterranean and Eastern Atlantic | Serranus hepatus |
| Brown Damsel | Perciformes | Marine | Dascyllus marginatus |
| Brown Disc | Perciformes | Freshwater rivers in South America | Symphysodon aequifasciatus |
| Brown Dottyback | Perciformes | Marine | Pseudochromis fuscus |
| Brown Dusky Shark | Carcharhiniformes | Marine | Carcharhinus obscurus |
| Brown Garden Eel | Anguilliformes | Marine | Heteroconger longissimus |
| Brown Goldeneye | Perciformes | Marine | Bregmaceros cantori |
| Brown Irish Lord | Scorpaeniformes | Marine temperate waters of the Northeast Pacific | Hemilepidotus spinosus |
| Brown Knifefish | Gymnotiformes | Freshwater | Apteronotus albifrons |
| Brown Pomfret | Perciformes | Marine | Brama brama |
| Brown Razorfish | Perciformes | Marine | Xyrichtys novacula |
| Brown Recluse | Araneae | Terrestrial | Loxosceles reclusa |
| Brown Smooth-Hound | Carcharhiniformes | Marine | Mustelus henlei |
| Brown Spotted Wrasse | Perciformes | Marine | Symphodus tangianus |
| Brown Surgeonfish | Perciformes | Marine | Acanthurus nigricans |
| Brown Tinkerfish | Perciformes | Marine | Starksia stigma |
| Brown Trout | Salmoniformes | Freshwater/Brackish | Salmo trutta |
| Brownbanded Bamboo Shark | Orectolobiformes | Marine | Chiloscyllium punctatum |
| Brownbanded Moray | Anguilliformes | Marine | Gymnothorax undulatus |
| Bucktooth Tetra | Characiformes | Freshwater | Myleus schomburgkii |
| Buffalo Fish | Characiformes | Freshwater | Ictiobus (genus) |
| Buffalo Scad | Perciformes | Marine tropical waters of the Indo-Pacific | Carangoides buchanani |
| Buffalo Sculpin | Scorpaeniformes | Marine | Enophrys bison |
| Bugeye Trevally | Carangiformes | Marine | Selar crumenophthalmus |
| Bull Shark | Carcharhiniformes | Marine/Freshwater | Carcharhinus leucas |
| Bulldog Batfish | Perciformes | Marine | Platax boersii |
| Bullen Shark | Carcharhiniformes | Marine/Freshwater | Carcharhinus leucas |
| Bullhead | Scorpaeniformes | Freshwater | Cottus gobio |
| Bullhead Catfish | Siluriformes | Freshwater rivers and lakes in North America | Ameiurus |
| Bullseye Puffer | Tetraodontiformes | Marine | Sphoeroides spengleri |
| Bullseye Snake Eel | Anguilliformes | Marine | Myrichthys maculosus |
| Bultung | Cypriniformes | Freshwater | Garra ceylonensis |
| Bumalo | Perciformes | Marine coastal waters of the Eastern Atlantic and Mediterranean | Boops boops |
| Bumblebee Catfish | Siluriformes | Freshwater rivers and streams in South America | Microglanis iheringi |
| Bumblebee Goby | Gobiiformes | Brackish and freshwater swamps in Southeast Asia | Brachygobius doriae |
| Bundu Barb | Cypriniformes | Freshwater | Barbus paludinosus |
| Burbot | Gadiformes | Freshwater | Lota lota |
| Burgess Butterflyfish | Perciformes | Marine | Chaetodon burgessi |
| Burma Gara | Cypriniformes | Freshwater | Garra burmanica |
| Burmese Border Loach | Cypriniformes | Freshwater | Botia histrionica |
| Burrfish | Tetraodontiformes | Marine tropical and subtropical waters worldwide | Chilomycterus reticulatus |
| Burrowing Goby | Gobiiformes | Marine | Trypauchenichthys luridus |
| Bushynose Pleco | Siluriformes | Freshwater | Ancistrus cirrhosus |
| Butte Copor | Cyprinidiformes | Freshwater | Copora (genus) |
| Butter Hamlet | Perciformes | Marine tropical reefs in the Western Atlantic | Hypoplectrus unicolor |
| Butter Mackerel | Scombriformes | Marine | Pneumatophorus japanese |
| Butterfish | Perciformes | Marine | Pholis gunnellus |
| Butterfish (Carolina) | Perciformes | Marine | Peprilus triacanthus |
| Butterfish (Japanese) | Perciformes | Marine | Psenopsis anomala |
| Butterfly Fish | Perciformes | Marine tropical reefs worldwide | Chaetodon |
| Butterfly Ray | Myliobatiformes | Marine | Gymnura |
| Butterfly Ray (Smooth) | Myliobatiformes | Marine | Gymnura altavela |
| Butterflyfish | Perciformes | Marine | Chaetodon capistratus |
| Butterflyfish (Bannerfish) | Perciformes | Marine | Heniochus acuminatus |
| Buzzard Jawfish | Perciformes | Marine | Opistognathus macrognathus |
| Bynoe's Goby | Gobiiformes | Freshwater/Brackish | Stigmatogobius bynoei |
| Bytez Goby | Gobiiformes | Freshwater | Rhinogobius giurinus |