There are 201 fish that start with the letter S, from Sabal to Swordfish. 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: Sabal
Order: Siluriformes
Habitat: Freshwater rivers in South America
Scientific name: Pimelodus sabalo
Name: Saber-toothed Blenny
Order: Blenniiformes
Habitat: Coral reefs in the Indo-Pacific
Scientific name: Plagiotremus azuriroseus
Name: Saber-toothed Pike
Order: Esociformes
Habitat: Freshwater lakes and rivers in North America and Eurasia
Scientific name: Esox lucius
Name: Sablefish
Order: Scorpaeniformes
Habitat: Deep temperate waters of the North Pacific
Scientific name: Anoplopoma fimbria
Name: Sacramento Blackfish
Order: Cypriniformes
Habitat: Freshwater lakes and rivers in California
Scientific name: Orthodon microlepidotus
Name: Sacramento Perch
Order: Perciformes
Habitat: Freshwater lakes and rivers in California and Nevada
Scientific name: Archoplites interruptus
Name: Sailfin Molly
Order: Cyprinodontiformes
Habitat: Brackish and freshwater along the Atlantic coast of North America
Scientific name: Poecilia latipinna
Name: Sailfin armored catfish
Order: Siluriformes
Habitat: Freshwater rivers in South America
Scientific name: Pterygoplichthys gibbiceps
Name: Sailfish
Order: Istiophoriformes
Habitat: Tropical and temperate open ocean waters worldwide
Scientific name: Istiophorus platypterus
Name: Saindhavari
Order: Cypriniformes
Habitat: Freshwater rivers and lakes in India and Sri Lanka
Scientific name: Labeo dussumieri
Name: Salangidae
Order: Argentiniformes
Habitat: Estuaries and coastal waters of East Asia
Scientific name: Salangidae
Name: Salmon
Order: Salmoniformes
Habitat: Both freshwater and saltwater in the North Atlantic
Scientific name: Salmo salar
Name: Salmon Shark
Order: Lamniformes
Habitat: Temperate and subarctic waters of the North Pacific
Scientific name: Lamna ditropis
Name: Salo
Order: Cypriniformes
Habitat: Freshwater rivers and lakes throughout South Asia
Scientific name: Labeo rohita
Name: Saltwater Crocodile Fish
Order: Scorpaeniformes
Habitat: Coastal waters and estuaries of the Indo-Pacific
Scientific name: Platycephalus indicus
Name: Samlet
Order: Salmoniformes
Habitat: Freshwater rivers and streams as juvenile salmon
Scientific name: Salmo salar
Name: Sand Bass
Order: Perciformes
Habitat: Coastal waters of California and Baja California
Scientific name: Paralabrax nebulifer
Name: Sand Devil
Order: Squatiniformes
Habitat: Atlantic Ocean off the eastern United States
Scientific name: Squatina dumeril
Name: Sand Diver
Order: Perciformes
Habitat: Tropical and subtropical Atlantic coastal waters
Scientific name: Synodus intermedius
Name: Sand Dory
Order: Zeiformes
Habitat: Deep temperate waters of the Indo-Pacific
Scientific name: Zenopsis nebulosa
Name: Sand Eel
Order: Aulopiformes
Habitat: Coastal waters and sandy bottoms in the North Atlantic
Scientific name: Ammodytes hexapterus
Name: Sand Flounder
Order: Pleuronectiformes
Habitat: Coastal waters of the North Pacific
Scientific name: Pleuronectes quadrituberculatus
Name: Sand Goby
Order: Gobiiformes
Habitat: Coastal waters and estuaries of Europe
Scientific name: Pomatoschistus minutus
Name: Sand Hake
Order: Gadiformes
Habitat: North Atlantic Ocean
Scientific name: Merluccius bilinearis
Name: Sand Lance
Order: Aulopiformes
Habitat: Coastal waters and sandy bottoms in the North Atlantic
Scientific name: Ammodytes americanus
Name: Sand Perch
Order: Perciformes
Habitat: Freshwater rivers and lakes in North America
Scientific name: Percina caprodes
Name: Sand Pike
Order: Perciformes
Habitat: Tropical and subtropical coastal waters worldwide
Scientific name: Sphyraena barracuda
Name: Sand Roller
Order: Perciformes
Habitat: Freshwater rivers and lakes in the Pacific Northwest
Scientific name: Percopsis transmontana
Name: Sand Smelt
Order: Atheriniformes
Habitat: Coastal waters and estuaries of Europe and Africa
Scientific name: Atherina presbyter
Name: Sand Stargazer
Order: Perciformes
Habitat: Coastal waters of the western Atlantic Ocean
Scientific name: Astroscopus sexspinus
Name: Sand Tiger Shark
Order: Lamniformes
Habitat: Coastal waters in temperate and tropical oceans worldwide
Scientific name: Carcharias taurus
Name: Sand Whiting
Order: Perciformes
Habitat: Coastal waters of eastern Australia
Scientific name: Sillago ciliata
Name: Sander
Order: Perciformes
Habitat: Freshwater lakes and rivers in Europe and Asia
Scientific name: Sander lucioperca
Name: Sandfish
Order: Perciformes
Habitat: Coastal waters of the North Pacific
Scientific name: Trichodon trichodon
Name: Sarcastic Fringehead
Order: Perciformes
Habitat: Coastal waters of California and Baja California
Scientific name: Neoclinus blanchardi
Name: Sardine
Order: Clupeiformes
Habitat: Temperate and subtropical waters worldwide
Scientific name: Sardina pilchardus
Name: Sardinella
Order: Clupeiformes
Habitat: Coastal waters of the Atlantic and Indo-Pacific
Scientific name: Sardinella aurita
Name: Sargent Major
Order: Perciformes
Habitat: Tropical and subtropical reefs in the Atlantic
Scientific name: Abudefduf saxatilis
Name: Sargo
Order: Spariformes
Habitat: Coastal waters of the Atlantic and Mediterranean
Scientific name: Diplodus sargus
Name: Satan
Order: Perciformes
Habitat: Subterranean waters of Texas
Scientific name: Satan eurystomus
Name: Sauger
Order: Perciformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Sander canadensis
Name: Sauries
Order: Beloniformes
Habitat: Temperate open ocean waters worldwide
Scientific name: Scomberesox saurus
Name: Sawfish
Order: Pristiformes
Habitat: Coastal and estuarine waters in tropical regions
Scientific name: Pristis pectinata
Name: Sawflounder
Order: Pleuronectiformes
Habitat: Coastal waters of the eastern Pacific Ocean
Scientific name: Xystreurys liolepis
Name: Sawshark
Order: Pristiophoriformes
Habitat: Temperate and tropical waters of the Pacific and Indian Oceans
Scientific name: Pristiophorus cirratus
Name: Saxicoline Flathead
Order: Scorpaeniformes
Habitat: Coastal waters of Australia
Scientific name: Platycephalus saxatilis
Name: Scalare
Order: Cichliformes
Habitat: Freshwater rivers in South America
Scientific name: Pterophyllum scalare
Name: Scalemouth
Order: Gadiformes
Habitat: Coastal waters of the North Atlantic
Scientific name: Raniceps raninus
Name: Scalloped Hammerhead
Order: Carcharhiniformes
Habitat: Tropical and warm temperate coastal waters worldwide
Scientific name: Sphyrna lewini
Name: Scat
Order: Perciformes
Habitat: Brackish and freshwater in the Indo-Pacific
Scientific name: Scatophagus argus
Name: Schoolmaster
Order: Perciformes
Habitat: Coral reefs and coastal waters of the western Atlantic
Scientific name: Lutjanus apodus
Name: Sciaenidae
Order: Perciformes
Habitat: Coastal waters worldwide
Scientific name: Sciaenidae
Name: Scleronema
Order: Siluriformes
Habitat: Freshwater rivers in South America
Scientific name: Scleronema operculatum
Name: Scomber
Order: Scombriformes
Habitat: Temperate waters of the North Atlantic
Scientific name: Scomber scombrus
Name: Scomberomorus
Order: Scombriformes
Habitat: Tropical and subtropical waters worldwide
Scientific name: Scomberomorus cavalla
Name: Score Bass
Order: Perciformes
Habitat: Coastal waters of the Mediterranean and eastern Atlantic
Scientific name: Serranus scriba
Name: Scorpionfish
Order: Scorpaeniformes
Habitat: Tropical and temperate coastal waters worldwide
Scientific name: Scorpaena scrofa
Name: Scorpiontail
Order: Scorpaeniformes
Habitat: Coral reefs in the Indo-Pacific
Scientific name: Scorpaenopsis venosa
Name: Scrawled Filefish
Order: Tetraodontiformes
Habitat: Tropical and subtropical waters worldwide
Scientific name: Aluterus scriptus
Name: Scribbled Angelfish
Order: Perciformes
Habitat: Coral reefs of the western Pacific
Scientific name: Chaetodontoplus duboulayi
Name: Scribbled Pipefish
Order: Syngnathiformes
Habitat: Coral reefs in the Indo-Pacific
Scientific name: Corythoichthys scribbled
Name: Sculpin
Order: Scorpaeniformes
Habitat: Coastal waters of the North Atlantic
Scientific name: Myoxocephalus scorpius
Name: Sea Bass
Order: Perciformes
Habitat: Coastal waters of the Atlantic and Mediterranean
Scientific name: Dicentrarchus labrax
Name: Sea Bream
Order: Spariformes
Habitat: Coastal waters of the Indo-Pacific and eastern Atlantic
Scientific name: Pagrus major
Name: Sea Catfish
Order: Siluriformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Arius felis
Name: Sea Chub
Order: Perciformes
Habitat: Tropical and subtropical waters worldwide
Scientific name: Kyphosus sectatrix
Name: Sea Cucumber
Order: Holothuroidea
Habitat: Seafloor of tropical and temperate oceans (Note: Not a fish)
Scientific name: Holothuria scabra
Name: Sea Dragon
Order: Syngnathiformes
Habitat: Coastal waters of southern Australia
Scientific name: Phyllopteryx taeniolatus
Name: Sea Lamprey
Order: Petromyzontiformes
Habitat: Coastal and freshwater in the North Atlantic.
Scientific name: Petromyzon marinus
Name: Sea Raven
Order: Scorpaeniformes
Habitat: Coastal waters of the North Atlantic
Scientific name: Hemitripterus americanus
Name: Sea Robin
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Prionotus carolinus
Name: Sea Snake
Order: Squamata
Habitat: Tropical and subtropical open ocean (Note: Not a fish)
Scientific name: Hydrophis platurus
Name: Sea Stickleback
Order: Gasterosteiformes
Habitat: Coastal waters of the North Atlantic
Scientific name: Spinachia spinachia
Name: Sea Trout
Order: Salmoniformes
Habitat: Coastal and freshwater in the North Atlantic
Scientific name: Salmo trutta trutta
Name: Sea Urchin
Order: Echinoidea
Habitat: Rocky seafloor (Not a fish)
Scientific name: Strongylocentrotus droebachiensis
Name: Sea Wasp
Order: Cubomedusae
Habitat: Coastal waters of Northern Australia (Not a fish)
Scientific name: Chironex fleckeri
Name: Sea Whip
Order: Anthozoa
Habitat: Tropical and subtropical reefs (Not a fish)
Scientific name: Gorgoniidae
Name: Seadevil
Order: Lophiiformes
Habitat: Deep ocean waters worldwide
Scientific name: Melanocetus johnsonii
Name: Seahorse
Order: Syngnathiformes
Habitat: Coastal waters worldwide
Scientific name: Hippocampus erectus
Name: Seer Fish
Order: Scombriformes
Habitat: Coastal waters of the Indo-Pacific
Scientific name: Scomberomorus commerson
Name: Sergeant Major
Order: Perciformes
Habitat: Tropical and subtropical reefs in the Atlantic
Scientific name: Abudefduf saxatilis
Name: Seriola
Order: Carangiformes
Habitat: Temperate and tropical open ocean waters worldwide
Scientific name: Seriola dumerili
Name: Serpent Eel
Order: Anguilliformes
Habitat: Coastal waters and estuaries of the Indo-Pacific
Scientific name: Pisodonophis boro
Name: Serra
Order: Carangiformes
Habitat: Temperate and subtropical open ocean waters worldwide
Scientific name: Seriola lalandi
Name: Shanny
Order: Blenniiformes
Habitat: Coastal waters of the North Atlantic
Scientific name: Lipophrys pholis
Name: Shark
Order: Selachimorpha
Habitat: Oceans worldwide
Scientific name: Carcharodon carcharias
Name: Sharpbill Drum
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Umbrina coroides
Name: Sharpeye Bass
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Serranus subligarius
Name: Sharpnose Puffer
Order: Tetraodontiformes
Habitat: Coral reefs in the tropical Atlantic
Scientific name: Canthigaster rostrata
Name: Sheepshead
Order: Spariformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Archosargus probatocephalus
Name: Sheepshead Minnow
Order: Cyprinodontiformes
Habitat: Coastal and brackish waters of North America
Scientific name: Cyprinodon variegatus
Name: Shiner
Order: Cypriniformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Notropis hudsonius
Name: Short Bigeye
Order: Perciformes
Habitat: Deep rocky reefs in the western Atlantic
Scientific name: Pristigenys alta
Name: Shortfin Mako Shark
Order: Lamniformes
Habitat: Temperate and tropical open ocean waters worldwide
Scientific name: Isurus oxyrinchus
Name: Shortnose Batfish
Order: Lophiiformes
Habitat: Deep waters of the western Atlantic
Scientific name: Ogcocephalus nasutus
Name: Shortnose Sturgeon
Order: Acipenseriformes
Habitat: Estuaries and rivers along the Atlantic coast of North America
Scientific name: Acipenser brevirostrum
Name: Shovelnose Guitarfish
Order: Rhinopristiformes
Habitat: Coastal waters of the eastern Pacific
Scientific name: Rhinobatos productus
Name: Siamese Fighting Fish
Order: Perciformes
Habitat: Freshwater in Southeast Asia
Scientific name: Betta splendens
Name: Sibbaldina
Order: Characiformes
Habitat: Freshwater rivers in South America
Scientific name: Sibbaldina heterolepis
Name: Siberian Sturgeon
Order: Acipenseriformes
Habitat: Freshwater rivers in Siberia
Scientific name: Acipenser baerii
Name: Sicia
Order: Perciformes
Habitat: Coastal waters of the Indo-Pacific
Scientific name: Sicia lacrymosa
Name: Sicyopterus
Order: Gobiiformes
Habitat: Freshwater rivers in Hawaii
Scientific name: Sicyopterus stimpsoni
Name: Silas
Order: Siluriformes
Habitat: Freshwater rivers in South America
Scientific name: Silas neofelis
Name: Silky Shark
Order: Carcharhiniformes
Habitat: Tropical and subtropical open ocean waters worldwide
Scientific name: Carcharhinus falciformis
Name: Sillaginidae
Order: Perciformes
Habitat: Coastal waters of the Indo-Pacific
Scientific name: Sillaginidae
Name: Silver Arowana
Order: Osteoglossiformes
Habitat: Freshwater rivers in South America
Scientific name: Osteoglossum bicirrhosum
Name: Silver Carp
Order: Cypriniformes
Habitat: Freshwater lakes and rivers in East Asia
Scientific name: Hypophthalmichthys molitrix
Name: Silver Dolly
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Selene vomer
Name: Silver Drum
Order: Perciformes
Habitat: Coastal waters of the eastern Atlantic
Scientific name: Umbrina broussonnetii
Name: Silver Hake
Order: Gadiformes
Habitat: North Atlantic Ocean
Scientific name: Merluccius bilinearis
Name: Silver Lamprey
Order: Petromyzontiformes
Habitat: Freshwater rivers and lakes in North America
Scientific name: Ichthyomyzon unicuspis
Name: Silver Perch
Order: Perciformes
Habitat: Coastal waters and estuaries of the western Atlantic
Scientific name: Bairdiella chrysoura
Name: Silver Roughy
Order: Beryciformes
Habitat: Deep waters worldwide
Scientific name: Hoplostethus mediterraneus
Name: Silver Salmon
Order: Salmoniformes
Habitat: Pacific Ocean and freshwater rivers in North America
Scientific name: Oncorhynchus kisutch
Name: Silver Shark
Order: Characiformes
Habitat: Freshwater rivers in South America
Scientific name: Myleus schomburgkii
Name: Silver Spot
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Diplodus argenteus
Name: Silver Stripe Butterfish
Order: Perciformes
Habitat: Pelagic waters in the Indo-Pacific
Scientific name: Psenes arafurensis
Name: Silver Sturgeon
Order: Acipenseriformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Acipenser fulvescens
Name: Silver Sweep
Order: Perciformes
Habitat: Coastal waters of Australia
Scientific name: Scorpis lineolata
Name: Silver Wolffish
Order: Perciformes
Habitat: North Atlantic Ocean
Scientific name: Anarhichas denticulatus
Name: Sinar
Order: Characiformes
Habitat: Freshwater rivers in South America
Scientific name: Sinar spinosus
Name: Singing Fish
Order: Lophiiformes
Habitat: Sargassum weed in the Atlantic Ocean
Scientific name: Pterophryne histrio
Name: Siphon Fish
Order: Syngnathiformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Siphostoma floridae
Name: Sipunculid Worm
Order: Sipuncula
Habitat: Marine benthic environments (Note: Not a fish)
Scientific name: Phascolopsis gouldii
Name: Sixgill Shark
Order: Hexanchiformes
Habitat: Deep temperate and tropical waters worldwide
Scientific name: Hexanchus griseus
Name: Skate
Order: Rajiformes
Habitat: Temperate coastal waters worldwide
Scientific name: Raja clavata
Name: Skilfish
Order: Scorpaeniformes
Habitat: Deep temperate waters of the North Pacific
Scientific name: Erilepis zonifer
Name: Skipjack Tuna
Order: Scombriformes
Habitat: Tropical and warm temperate open ocean waters worldwide
Scientific name: Katsuwonus pelamis
Name: Sleeper Shark
Order: Squaliformes
Habitat: Cold deep waters of the North Atlantic (Greenland Shark)
Scientific name: Somniosus microcephalus
Name: Slender Sunfish
Order: Perciformes
Habitat: Freshwater rivers in North America
Scientific name: Morone mississippiensis
Name: Slickhead
Order: Argentiniformes
Habitat: Deep waters of the North Atlantic
Scientific name: Alepocephalus bairdii
Name: Slimehead
Order: Beryciformes
Habitat: Deep temperate and tropical waters worldwide
Scientific name: Hoplostethus atlanticus
Name: Slimetail
Order: Gadiformes
Habitat: Deep waters of the North Atlantic
Scientific name: Macrourus berglax
Name: Slimy Sculpin
Order: Scorpaeniformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Cottus cognatus
Name: Sling-jaw Wrasse
Order: Perciformes
Habitat: Coral reefs in the Indo-Pacific
Scientific name: Epibulus insidiator
Name: Smalleye Squaretail
Order: Perciformes
Habitat: Deep waters worldwide
Scientific name: Tetragonurus cuvieri
Name: Smalleys
Order: Squatiniformes
Habitat: Deep waters of the western Atlantic
Scientific name: Squatina caillieti
Name: Smallmouth Bass
Order: Perciformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Micropterus dolomieu
Name: Smalltooth Sawfish
Order: Pristiformes
Habitat: Coastal and estuarine waters in tropical regions
Scientific name: Pristis pectinata
Name: Smelt
Order: Osmeriformes
Habitat: Coastal and freshwater in the North Atlantic
Scientific name: Osmerus mordax
Name: Smooth Anglerfish
Order: Lophiiformes
Habitat: Deep waters of the Atlantic Ocean
Scientific name: Phrynichthys wedli
Name: Smooth Dogfish
Order: Carcharhiniformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Mustelus canis
Name: Smooth Hammerhead
Order: Carcharhiniformes
Habitat: Temperate and tropical open ocean waters worldwide
Scientific name: Sphyrna zygaena
Name: Smooth Oreodory
Order: Oreosomatiformes
Habitat: Deep temperate waters of the Southern Hemisphere
Scientific name: Pseudocyttus maculatus
Name: Smooth Puffer
Order: Tetraodontiformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Lagocephalus laevigatus
Name: Smooth stargazer
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Gillellus hemmingi
Name: Smoothhead
Order: Argentiniformes
Habitat: Deep waters of the North Atlantic
Scientific name: Bathylagus euryops
Name: Snake Eel
Order: Anguilliformes
Habitat: Coastal waters worldwide
Scientific name: Ophichthus ophis
Name: Snake Mackerel
Order: Scombriformes
Habitat: Open ocean waters worldwide
Scientific name: Gempylus serpens
Name: Snakehead
Order: Perciformes
Habitat: Freshwater in Asia
Scientific name: Channa argus
Name: Snapper
Order: Perciformes
Habitat: Tropical and subtropical coastal waters worldwide
Scientific name: Lutjanus campechanus
Name: Snapping Shrimp
Order: Decapoda
Habitat: Coral reefs in the Indo-Pacific (Note: Not a fish)
Scientific name: Alpheus bellulus
Name: Snipe Eel
Order: Anguilliformes
Habitat: Deep waters worldwide
Scientific name: Nemichthys scolopaceus
Name: Snook
Order: Perciformes
Habitat: Coastal waters and estuaries of the western Atlantic
Scientific name: Centropomus undecimalis
Name: Snow Trout
Order: Cypriniformes
Habitat: Freshwater rivers in the Himalayas
Scientific name: Schizothorax plagiostomus
Name: Snowflake Eel
Order: Anguilliformes
Habitat: Coral reefs in the Indo-Pacific
Scientific name: Echidna nebulosa
Name: Soapfish
Order: Perciformes
Habitat: Tropical and subtropical coral reefs
Scientific name: Rypticus saponaceus
Name: Sockeye Salmon
Order: Salmoniformes
Habitat: Pacific Ocean and freshwater rivers in North America
Scientific name: Oncorhynchus nerka
Name: Soldierfish
Order: Beryciformes
Habitat: Coral reefs in the Indo-Pacific
Scientific name: Myripristis murdjan
Name: Sole
Order: Pleuronectiformes
Habitat: Coastal waters of the Atlantic and Mediterranean
Scientific name: Solea solea
Name: Soleidae
Order: Pleuronectiformes
Habitat: Coastal waters worldwide
Scientific name: Soleidae
Name: Solor
Order: Siluriformes
Habitat: Freshwater rivers in South America
Scientific name: Pimelodus solor
Name: Sooda
Order: Cypriniformes
Habitat: Freshwater rivers in Asia
Scientific name: Labeo pangusia
Name: Sorubim
Order: Siluriformes
Habitat: Freshwater rivers in South America
Scientific name: Pseudoplatystoma corruscans
Name: Soufflé fish
Order: Tetraodontiformes
Habitat: Tropical waters of the Indo-Pacific
Scientific name: Tetrosomus concatenatus
Name: Southern Flounder
Order: Pleuronectiformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Paralichthys lethostigma
Name: Southern Kingfish
Order: Perciformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Menticirrhus americanus
Name: Southern Mackerel
Order: Scombriformes
Habitat: Temperate waters of the Southern Hemisphere
Scientific name: Scomber australasicus
Name: Southern Platyfish
Order: Cyprinodontiformes
Habitat: Freshwater streams in Central America
Scientific name: Xiphophorus maculatus
Name: Southern Stingray
Order: Myliobatiformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Hypanus americanus
Name: Southern Whiting
Order: Perciformes
Habitat: Coastal waters of Europe
Scientific name: Merlangius merlangus
Name: Spadefish
Order: Ephippiformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Chaetodipterus faber
Name: Spangled Emperor
Order: Perciformes
Habitat: Coral reefs and coastal waters of the Indo-Pacific
Scientific name: Lethrinus nebulosus
Name: Spanish Mackerel
Order: Scombriformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Scomberomorus maculatus
Name: Sparidae
Order: Spariformes
Habitat: Coastal waters worldwide
Scientific name: Sparidae
Name: Sparisoma
Order: Perciformes
Habitat: Tropical coral reefs in the Atlantic
Scientific name: Sparisoma viride
Name: Spearfish
Order: Istiophoriformes
Habitat: Tropical and temperate open ocean waters worldwide
Scientific name: Tetrapturus pfluegeri
Name: Spinefoot
Order: Siganiformes
Habitat: Coral reefs and coastal waters of the Indo-Pacific
Scientific name: Siganus rivulatus
Name: Spot
Order: Perciformes
Habitat: Coastal waters and estuaries of the western Atlantic
Scientific name: Leiostomus xanthurus
Name: Spotted Bass
Order: Perciformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Micropterus punctulatus
Name: Spotted Cabrilla
Order: Perciformes
Habitat: Coastal waters of the eastern Pacific
Scientific name: Epinephelus analogus
Name: Spotted Eagle Ray
Order: Myliobatiformes
Habitat: Tropical and subtropical coastal waters worldwide
Scientific name: Aetobatus narinari
Name: Spotted Moray
Order: Anguilliformes
Habitat: Tropical and subtropical reefs in the Atlantic
Scientific name: Gymnothorax moringa
Name: Spotted Ratfish
Order: Chimaeriformes
Habitat: Deep temperate waters of the North Pacific
Scientific name: Hydrolagus colliei
Name: Squid
Order: Teuthida
Habitat: Oceans worldwide (Note: Not a fish)
Scientific name: Teuthida
Name: Squirrelfish
Order: Holocentriformes
Habitat: Tropical reefs in the Atlantic
Scientific name: Holocentrus adscensionis
Name: Stargazer
Order: Perciformes
Habitat: Coastal waters worldwide
Scientific name: Uranoscopus scaber
Name: Steelhead
Order: Salmoniformes
Habitat: Pacific Ocean and freshwater rivers in North America
Scientific name: Oncorhynchus mykiss
Name: Stenopus
Order: Decapoda
Habitat: Coral reefs worldwide (Note: Not a fish)
Scientific name: Stenopus hispidus
Name: Sterlet
Order: Acipenseriformes
Habitat: Freshwater rivers in Europe and Asia
Scientific name: Acipenser ruthenus
Name: Stickleback
Order: Gasterosteiformes
Habitat: Both freshwater and saltwater in the Northern Hemisphere
Scientific name: Gasterosteus aculeatus
Name: Stingray
Order: Myliobatiformes
Habitat: Coastal waters worldwide
Scientific name: Dasyatis pastinaca
Name: Stonefish
Order: Scorpaeniformes
Habitat: Coastal waters of the Indo-Pacific
Scientific name: Synanceia horrida
Name: Striped Bass
Order: Perciformes
Habitat: Coastal and freshwater in North America
Scientific name: Morone saxatilis
Name: Sturgeon
Order: Acipenseriformes
Habitat: Coastal and freshwater in the Northern Hemisphere
Scientific name: Acipenser sturio
Name: Sucker
Order: Cypriniformes
Habitat: Freshwater rivers and lakes in North America
Scientific name: Catostomus commersonii
Name: Summer Flounder
Order: Pleuronectiformes
Habitat: Coastal waters of the western Atlantic
Scientific name: Paralichthys dentatus
Name: Sunfish
Order: Perciformes
Habitat: Freshwater lakes and rivers in North America
Scientific name: Lepomis gibbosus
Name: Surgeonfish
Order: Acanthuriformes
Habitat: Tropical reefs worldwide
Scientific name: Acanthurus triostegus
Name: Swell Shark
Order: Carcharhiniformes
Habitat: Coastal waters of the eastern Pacific
Scientific name: Cephaloscyllium ventriosum
Name: Swordfish
Order: Xiphiiformes
Habitat: Ocean waters worldwide
Scientific name: Xiphias gladius
| Name | Order | Habitat | Scientific name |
|---|---|---|---|
| Sabal | Siluriformes | Freshwater rivers in South America | Pimelodus sabalo |
| Saber-toothed Blenny | Blenniiformes | Coral reefs in the Indo-Pacific | Plagiotremus azuriroseus |
| Saber-toothed Pike | Esociformes | Freshwater lakes and rivers in North America and Eurasia | Esox lucius |
| Sablefish | Scorpaeniformes | Deep temperate waters of the North Pacific | Anoplopoma fimbria |
| Sacramento Blackfish | Cypriniformes | Freshwater lakes and rivers in California | Orthodon microlepidotus |
| Sacramento Perch | Perciformes | Freshwater lakes and rivers in California and Nevada | Archoplites interruptus |
| Sailfin Molly | Cyprinodontiformes | Brackish and freshwater along the Atlantic coast of North America | Poecilia latipinna |
| Sailfin armored catfish | Siluriformes | Freshwater rivers in South America | Pterygoplichthys gibbiceps |
| Sailfish | Istiophoriformes | Tropical and temperate open ocean waters worldwide | Istiophorus platypterus |
| Saindhavari | Cypriniformes | Freshwater rivers and lakes in India and Sri Lanka | Labeo dussumieri |
| Salangidae | Argentiniformes | Estuaries and coastal waters of East Asia | Salangidae |
| Salmon | Salmoniformes | Both freshwater and saltwater in the North Atlantic | Salmo salar |
| Salmon Shark | Lamniformes | Temperate and subarctic waters of the North Pacific | Lamna ditropis |
| Salo | Cypriniformes | Freshwater rivers and lakes throughout South Asia | Labeo rohita |
| Saltwater Crocodile Fish | Scorpaeniformes | Coastal waters and estuaries of the Indo-Pacific | Platycephalus indicus |
| Samlet | Salmoniformes | Freshwater rivers and streams as juvenile salmon | Salmo salar |
| Sand Bass | Perciformes | Coastal waters of California and Baja California | Paralabrax nebulifer |
| Sand Devil | Squatiniformes | Atlantic Ocean off the eastern United States | Squatina dumeril |
| Sand Diver | Perciformes | Tropical and subtropical Atlantic coastal waters | Synodus intermedius |
| Sand Dory | Zeiformes | Deep temperate waters of the Indo-Pacific | Zenopsis nebulosa |
| Sand Eel | Aulopiformes | Coastal waters and sandy bottoms in the North Atlantic | Ammodytes hexapterus |
| Sand Flounder | Pleuronectiformes | Coastal waters of the North Pacific | Pleuronectes quadrituberculatus |
| Sand Goby | Gobiiformes | Coastal waters and estuaries of Europe | Pomatoschistus minutus |
| Sand Hake | Gadiformes | North Atlantic Ocean | Merluccius bilinearis |
| Sand Lance | Aulopiformes | Coastal waters and sandy bottoms in the North Atlantic | Ammodytes americanus |
| Sand Perch | Perciformes | Freshwater rivers and lakes in North America | Percina caprodes |
| Sand Pike | Perciformes | Tropical and subtropical coastal waters worldwide | Sphyraena barracuda |
| Sand Roller | Perciformes | Freshwater rivers and lakes in the Pacific Northwest | Percopsis transmontana |
| Sand Smelt | Atheriniformes | Coastal waters and estuaries of Europe and Africa | Atherina presbyter |
| Sand Stargazer | Perciformes | Coastal waters of the western Atlantic Ocean | Astroscopus sexspinus |
| Sand Tiger Shark | Lamniformes | Coastal waters in temperate and tropical oceans worldwide | Carcharias taurus |
| Sand Whiting | Perciformes | Coastal waters of eastern Australia | Sillago ciliata |
| Sander | Perciformes | Freshwater lakes and rivers in Europe and Asia | Sander lucioperca |
| Sandfish | Perciformes | Coastal waters of the North Pacific | Trichodon trichodon |
| Sarcastic Fringehead | Perciformes | Coastal waters of California and Baja California | Neoclinus blanchardi |
| Sardine | Clupeiformes | Temperate and subtropical waters worldwide | Sardina pilchardus |
| Sardinella | Clupeiformes | Coastal waters of the Atlantic and Indo-Pacific | Sardinella aurita |
| Sargent Major | Perciformes | Tropical and subtropical reefs in the Atlantic | Abudefduf saxatilis |
| Sargo | Spariformes | Coastal waters of the Atlantic and Mediterranean | Diplodus sargus |
| Satan | Perciformes | Subterranean waters of Texas | Satan eurystomus |
| Sauger | Perciformes | Freshwater lakes and rivers in North America | Sander canadensis |
| Sauries | Beloniformes | Temperate open ocean waters worldwide | Scomberesox saurus |
| Sawfish | Pristiformes | Coastal and estuarine waters in tropical regions | Pristis pectinata |
| Sawflounder | Pleuronectiformes | Coastal waters of the eastern Pacific Ocean | Xystreurys liolepis |
| Sawshark | Pristiophoriformes | Temperate and tropical waters of the Pacific and Indian Oceans | Pristiophorus cirratus |
| Saxicoline Flathead | Scorpaeniformes | Coastal waters of Australia | Platycephalus saxatilis |
| Scalare | Cichliformes | Freshwater rivers in South America | Pterophyllum scalare |
| Scalemouth | Gadiformes | Coastal waters of the North Atlantic | Raniceps raninus |
| Scalloped Hammerhead | Carcharhiniformes | Tropical and warm temperate coastal waters worldwide | Sphyrna lewini |
| Scat | Perciformes | Brackish and freshwater in the Indo-Pacific | Scatophagus argus |
| Schoolmaster | Perciformes | Coral reefs and coastal waters of the western Atlantic | Lutjanus apodus |
| Sciaenidae | Perciformes | Coastal waters worldwide | Sciaenidae |
| Scleronema | Siluriformes | Freshwater rivers in South America | Scleronema operculatum |
| Scomber | Scombriformes | Temperate waters of the North Atlantic | Scomber scombrus |
| Scomberomorus | Scombriformes | Tropical and subtropical waters worldwide | Scomberomorus cavalla |
| Score Bass | Perciformes | Coastal waters of the Mediterranean and eastern Atlantic | Serranus scriba |
| Scorpionfish | Scorpaeniformes | Tropical and temperate coastal waters worldwide | Scorpaena scrofa |
| Scorpiontail | Scorpaeniformes | Coral reefs in the Indo-Pacific | Scorpaenopsis venosa |
| Scrawled Filefish | Tetraodontiformes | Tropical and subtropical waters worldwide | Aluterus scriptus |
| Scribbled Angelfish | Perciformes | Coral reefs of the western Pacific | Chaetodontoplus duboulayi |
| Scribbled Pipefish | Syngnathiformes | Coral reefs in the Indo-Pacific | Corythoichthys scribbled |
| Sculpin | Scorpaeniformes | Coastal waters of the North Atlantic | Myoxocephalus scorpius |
| Sea Bass | Perciformes | Coastal waters of the Atlantic and Mediterranean | Dicentrarchus labrax |
| Sea Bream | Spariformes | Coastal waters of the Indo-Pacific and eastern Atlantic | Pagrus major |
| Sea Catfish | Siluriformes | Coastal waters of the western Atlantic | Arius felis |
| Sea Chub | Perciformes | Tropical and subtropical waters worldwide | Kyphosus sectatrix |
| Sea Cucumber | Holothuroidea | Seafloor of tropical and temperate oceans (Note: Not a fish) | Holothuria scabra |
| Sea Dragon | Syngnathiformes | Coastal waters of southern Australia | Phyllopteryx taeniolatus |
| Sea Lamprey | Petromyzontiformes | Coastal and freshwater in the North Atlantic. | Petromyzon marinus |
| Sea Raven | Scorpaeniformes | Coastal waters of the North Atlantic | Hemitripterus americanus |
| Sea Robin | Perciformes | Coastal waters of the western Atlantic | Prionotus carolinus |
| Sea Snake | Squamata | Tropical and subtropical open ocean (Note: Not a fish) | Hydrophis platurus |
| Sea Stickleback | Gasterosteiformes | Coastal waters of the North Atlantic | Spinachia spinachia |
| Sea Trout | Salmoniformes | Coastal and freshwater in the North Atlantic | Salmo trutta trutta |
| Sea Urchin | Echinoidea | Rocky seafloor (Not a fish) | Strongylocentrotus droebachiensis |
| Sea Wasp | Cubomedusae | Coastal waters of Northern Australia (Not a fish) | Chironex fleckeri |
| Sea Whip | Anthozoa | Tropical and subtropical reefs (Not a fish) | Gorgoniidae |
| Seadevil | Lophiiformes | Deep ocean waters worldwide | Melanocetus johnsonii |
| Seahorse | Syngnathiformes | Coastal waters worldwide | Hippocampus erectus |
| Seer Fish | Scombriformes | Coastal waters of the Indo-Pacific | Scomberomorus commerson |
| Sergeant Major | Perciformes | Tropical and subtropical reefs in the Atlantic | Abudefduf saxatilis |
| Seriola | Carangiformes | Temperate and tropical open ocean waters worldwide | Seriola dumerili |
| Serpent Eel | Anguilliformes | Coastal waters and estuaries of the Indo-Pacific | Pisodonophis boro |
| Serra | Carangiformes | Temperate and subtropical open ocean waters worldwide | Seriola lalandi |
| Shanny | Blenniiformes | Coastal waters of the North Atlantic | Lipophrys pholis |
| Shark | Selachimorpha | Oceans worldwide | Carcharodon carcharias |
| Sharpbill Drum | Perciformes | Coastal waters of the western Atlantic | Umbrina coroides |
| Sharpeye Bass | Perciformes | Coastal waters of the western Atlantic | Serranus subligarius |
| Sharpnose Puffer | Tetraodontiformes | Coral reefs in the tropical Atlantic | Canthigaster rostrata |
| Sheepshead | Spariformes | Coastal waters of the western Atlantic | Archosargus probatocephalus |
| Sheepshead Minnow | Cyprinodontiformes | Coastal and brackish waters of North America | Cyprinodon variegatus |
| Shiner | Cypriniformes | Freshwater lakes and rivers in North America | Notropis hudsonius |
| Short Bigeye | Perciformes | Deep rocky reefs in the western Atlantic | Pristigenys alta |
| Shortfin Mako Shark | Lamniformes | Temperate and tropical open ocean waters worldwide | Isurus oxyrinchus |
| Shortnose Batfish | Lophiiformes | Deep waters of the western Atlantic | Ogcocephalus nasutus |
| Shortnose Sturgeon | Acipenseriformes | Estuaries and rivers along the Atlantic coast of North America | Acipenser brevirostrum |
| Shovelnose Guitarfish | Rhinopristiformes | Coastal waters of the eastern Pacific | Rhinobatos productus |
| Siamese Fighting Fish | Perciformes | Freshwater in Southeast Asia | Betta splendens |
| Sibbaldina | Characiformes | Freshwater rivers in South America | Sibbaldina heterolepis |
| Siberian Sturgeon | Acipenseriformes | Freshwater rivers in Siberia | Acipenser baerii |
| Sicia | Perciformes | Coastal waters of the Indo-Pacific | Sicia lacrymosa |
| Sicyopterus | Gobiiformes | Freshwater rivers in Hawaii | Sicyopterus stimpsoni |
| Silas | Siluriformes | Freshwater rivers in South America | Silas neofelis |
| Silky Shark | Carcharhiniformes | Tropical and subtropical open ocean waters worldwide | Carcharhinus falciformis |
| Sillaginidae | Perciformes | Coastal waters of the Indo-Pacific | Sillaginidae |
| Silver Arowana | Osteoglossiformes | Freshwater rivers in South America | Osteoglossum bicirrhosum |
| Silver Carp | Cypriniformes | Freshwater lakes and rivers in East Asia | Hypophthalmichthys molitrix |
| Silver Dolly | Perciformes | Coastal waters of the western Atlantic | Selene vomer |
| Silver Drum | Perciformes | Coastal waters of the eastern Atlantic | Umbrina broussonnetii |
| Silver Hake | Gadiformes | North Atlantic Ocean | Merluccius bilinearis |
| Silver Lamprey | Petromyzontiformes | Freshwater rivers and lakes in North America | Ichthyomyzon unicuspis |
| Silver Perch | Perciformes | Coastal waters and estuaries of the western Atlantic | Bairdiella chrysoura |
| Silver Roughy | Beryciformes | Deep waters worldwide | Hoplostethus mediterraneus |
| Silver Salmon | Salmoniformes | Pacific Ocean and freshwater rivers in North America | Oncorhynchus kisutch |
| Silver Shark | Characiformes | Freshwater rivers in South America | Myleus schomburgkii |
| Silver Spot | Perciformes | Coastal waters of the western Atlantic | Diplodus argenteus |
| Silver Stripe Butterfish | Perciformes | Pelagic waters in the Indo-Pacific | Psenes arafurensis |
| Silver Sturgeon | Acipenseriformes | Freshwater lakes and rivers in North America | Acipenser fulvescens |
| Silver Sweep | Perciformes | Coastal waters of Australia | Scorpis lineolata |
| Silver Wolffish | Perciformes | North Atlantic Ocean | Anarhichas denticulatus |
| Sinar | Characiformes | Freshwater rivers in South America | Sinar spinosus |
| Singing Fish | Lophiiformes | Sargassum weed in the Atlantic Ocean | Pterophryne histrio |
| Siphon Fish | Syngnathiformes | Coastal waters of the western Atlantic | Siphostoma floridae |
| Sipunculid Worm | Sipuncula | Marine benthic environments (Note: Not a fish) | Phascolopsis gouldii |
| Sixgill Shark | Hexanchiformes | Deep temperate and tropical waters worldwide | Hexanchus griseus |
| Skate | Rajiformes | Temperate coastal waters worldwide | Raja clavata |
| Skilfish | Scorpaeniformes | Deep temperate waters of the North Pacific | Erilepis zonifer |
| Skipjack Tuna | Scombriformes | Tropical and warm temperate open ocean waters worldwide | Katsuwonus pelamis |
| Sleeper Shark | Squaliformes | Cold deep waters of the North Atlantic (Greenland Shark) | Somniosus microcephalus |
| Slender Sunfish | Perciformes | Freshwater rivers in North America | Morone mississippiensis |
| Slickhead | Argentiniformes | Deep waters of the North Atlantic | Alepocephalus bairdii |
| Slimehead | Beryciformes | Deep temperate and tropical waters worldwide | Hoplostethus atlanticus |
| Slimetail | Gadiformes | Deep waters of the North Atlantic | Macrourus berglax |
| Slimy Sculpin | Scorpaeniformes | Freshwater lakes and rivers in North America | Cottus cognatus |
| Sling-jaw Wrasse | Perciformes | Coral reefs in the Indo-Pacific | Epibulus insidiator |
| Smalleye Squaretail | Perciformes | Deep waters worldwide | Tetragonurus cuvieri |
| Smalleys | Squatiniformes | Deep waters of the western Atlantic | Squatina caillieti |
| Smallmouth Bass | Perciformes | Freshwater lakes and rivers in North America | Micropterus dolomieu |
| Smalltooth Sawfish | Pristiformes | Coastal and estuarine waters in tropical regions | Pristis pectinata |
| Smelt | Osmeriformes | Coastal and freshwater in the North Atlantic | Osmerus mordax |
| Smooth Anglerfish | Lophiiformes | Deep waters of the Atlantic Ocean | Phrynichthys wedli |
| Smooth Dogfish | Carcharhiniformes | Coastal waters of the western Atlantic | Mustelus canis |
| Smooth Hammerhead | Carcharhiniformes | Temperate and tropical open ocean waters worldwide | Sphyrna zygaena |
| Smooth Oreodory | Oreosomatiformes | Deep temperate waters of the Southern Hemisphere | Pseudocyttus maculatus |
| Smooth Puffer | Tetraodontiformes | Coastal waters of the western Atlantic | Lagocephalus laevigatus |
| Smooth stargazer | Perciformes | Coastal waters of the western Atlantic | Gillellus hemmingi |
| Smoothhead | Argentiniformes | Deep waters of the North Atlantic | Bathylagus euryops |
| Snake Eel | Anguilliformes | Coastal waters worldwide | Ophichthus ophis |
| Snake Mackerel | Scombriformes | Open ocean waters worldwide | Gempylus serpens |
| Snakehead | Perciformes | Freshwater in Asia | Channa argus |
| Snapper | Perciformes | Tropical and subtropical coastal waters worldwide | Lutjanus campechanus |
| Snapping Shrimp | Decapoda | Coral reefs in the Indo-Pacific (Note: Not a fish) | Alpheus bellulus |
| Snipe Eel | Anguilliformes | Deep waters worldwide | Nemichthys scolopaceus |
| Snook | Perciformes | Coastal waters and estuaries of the western Atlantic | Centropomus undecimalis |
| Snow Trout | Cypriniformes | Freshwater rivers in the Himalayas | Schizothorax plagiostomus |
| Snowflake Eel | Anguilliformes | Coral reefs in the Indo-Pacific | Echidna nebulosa |
| Soapfish | Perciformes | Tropical and subtropical coral reefs | Rypticus saponaceus |
| Sockeye Salmon | Salmoniformes | Pacific Ocean and freshwater rivers in North America | Oncorhynchus nerka |
| Soldierfish | Beryciformes | Coral reefs in the Indo-Pacific | Myripristis murdjan |
| Sole | Pleuronectiformes | Coastal waters of the Atlantic and Mediterranean | Solea solea |
| Soleidae | Pleuronectiformes | Coastal waters worldwide | Soleidae |
| Solor | Siluriformes | Freshwater rivers in South America | Pimelodus solor |
| Sooda | Cypriniformes | Freshwater rivers in Asia | Labeo pangusia |
| Sorubim | Siluriformes | Freshwater rivers in South America | Pseudoplatystoma corruscans |
| Soufflé fish | Tetraodontiformes | Tropical waters of the Indo-Pacific | Tetrosomus concatenatus |
| Southern Flounder | Pleuronectiformes | Coastal waters of the western Atlantic | Paralichthys lethostigma |
| Southern Kingfish | Perciformes | Coastal waters of the western Atlantic | Menticirrhus americanus |
| Southern Mackerel | Scombriformes | Temperate waters of the Southern Hemisphere | Scomber australasicus |
| Southern Platyfish | Cyprinodontiformes | Freshwater streams in Central America | Xiphophorus maculatus |
| Southern Stingray | Myliobatiformes | Coastal waters of the western Atlantic | Hypanus americanus |
| Southern Whiting | Perciformes | Coastal waters of Europe | Merlangius merlangus |
| Spadefish | Ephippiformes | Coastal waters of the western Atlantic | Chaetodipterus faber |
| Spangled Emperor | Perciformes | Coral reefs and coastal waters of the Indo-Pacific | Lethrinus nebulosus |
| Spanish Mackerel | Scombriformes | Coastal waters of the western Atlantic | Scomberomorus maculatus |
| Sparidae | Spariformes | Coastal waters worldwide | Sparidae |
| Sparisoma | Perciformes | Tropical coral reefs in the Atlantic | Sparisoma viride |
| Spearfish | Istiophoriformes | Tropical and temperate open ocean waters worldwide | Tetrapturus pfluegeri |
| Spinefoot | Siganiformes | Coral reefs and coastal waters of the Indo-Pacific | Siganus rivulatus |
| Spot | Perciformes | Coastal waters and estuaries of the western Atlantic | Leiostomus xanthurus |
| Spotted Bass | Perciformes | Freshwater lakes and rivers in North America | Micropterus punctulatus |
| Spotted Cabrilla | Perciformes | Coastal waters of the eastern Pacific | Epinephelus analogus |
| Spotted Eagle Ray | Myliobatiformes | Tropical and subtropical coastal waters worldwide | Aetobatus narinari |
| Spotted Moray | Anguilliformes | Tropical and subtropical reefs in the Atlantic | Gymnothorax moringa |
| Spotted Ratfish | Chimaeriformes | Deep temperate waters of the North Pacific | Hydrolagus colliei |
| Squid | Teuthida | Oceans worldwide (Note: Not a fish) | Teuthida |
| Squirrelfish | Holocentriformes | Tropical reefs in the Atlantic | Holocentrus adscensionis |
| Stargazer | Perciformes | Coastal waters worldwide | Uranoscopus scaber |
| Steelhead | Salmoniformes | Pacific Ocean and freshwater rivers in North America | Oncorhynchus mykiss |
| Stenopus | Decapoda | Coral reefs worldwide (Note: Not a fish) | Stenopus hispidus |
| Sterlet | Acipenseriformes | Freshwater rivers in Europe and Asia | Acipenser ruthenus |
| Stickleback | Gasterosteiformes | Both freshwater and saltwater in the Northern Hemisphere | Gasterosteus aculeatus |
| Stingray | Myliobatiformes | Coastal waters worldwide | Dasyatis pastinaca |
| Stonefish | Scorpaeniformes | Coastal waters of the Indo-Pacific | Synanceia horrida |
| Striped Bass | Perciformes | Coastal and freshwater in North America | Morone saxatilis |
| Sturgeon | Acipenseriformes | Coastal and freshwater in the Northern Hemisphere | Acipenser sturio |
| Sucker | Cypriniformes | Freshwater rivers and lakes in North America | Catostomus commersonii |
| Summer Flounder | Pleuronectiformes | Coastal waters of the western Atlantic | Paralichthys dentatus |
| Sunfish | Perciformes | Freshwater lakes and rivers in North America | Lepomis gibbosus |
| Surgeonfish | Acanthuriformes | Tropical reefs worldwide | Acanthurus triostegus |
| Swell Shark | Carcharhiniformes | Coastal waters of the eastern Pacific | Cephaloscyllium ventriosum |
| Swordfish | Xiphiiformes | Ocean waters worldwide | Xiphias gladius |