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Freshwater Fish Species
All freshwater fish species found in rivers, lakes, streams, and ponds worldwide. From tiny tetras to the giant arapaima — covering every continent.
18,067
Total Species
1,926
Endangered (EN+CR)
1,910
Edible Species
204
Families
Slim betta
Betta bellica
Osphronemidae
Least Concern
Edible
Slim minnow
Pimephales tenellus
Cyprinidae
Least Concern
Slimy sculpin
Cottus cognatus
Cottidae
Least Concern
Edible
Slough darter
Etheostoma gracile
Percidae
Least Concern
Small snakehead
Channa asiatica
Channidae
Least Concern
Edible
Small-eyed loter
Prionobutis microps
Eleotridae
Least Concern
Small-eyed sculpin
Abyssocottus korotneffi
Least Concern
Small-mouth char
Salvelinus elgyticus
Salmonidae
Least Concern
smallfinger topminnow
Girardinus microdactylus
Poeciliidae
Least Concern
Smallmouth bass
Micropterus dolomieu
Centrarchidae
Least Concern
Edible
Smallmouth buffalo
Ictiobus bubalus
Catostomidae
Least Concern
Edible
Smallmouth electric catfish
Malapterurus microstoma
Malapteruridae
Least Concern
Edible
Smallmouth redhorse
Moxostoma breviceps
Catostomidae
Least Concern
Smallmouth yellowfish
Labeobarbus aeneus
Cyprinidae
Least Concern
Edible
Smallmouthed salmon catfish
Cinetodus froggatti
Least Concern
Smallscale archerfish
Toxotes microlepis
Toxotidae
Least Concern
Smallscale tonguesole
Cynoglossus microlepis
Cynoglossidae
Least Concern
Edible
Smallscale yellowfin
Plagiognathops microlepis
Cyprinidae
Least Concern
Smallscale yellowfish
Labeobarbus polylepis
Cyprinidae
Least Concern
Edible
Smallscaled spinycheek sleeper
Eleotris perniger
Eleotridae
Least Concern
Smalltail butter catfish
Ompok rhadinurus
Siluridae
Least Concern
Smalltooth Mini Tetra
Serrapinnus microdon
Characidae
Least Concern
Smilosicyopus Leprurus
Smilosicyopus leprurus
Gobiidae
Least Concern
Smooth back river stingray
Potamotrygon orbignyi
Potamotrygonidae
Least Concern
Smooth-cheek eartheater
Gymnogeophagus gymnogenys
Cichlidae
Least Concern
Edible
Smoothbelly goby
Sicydium gymnogaster
Gobiidae
Least Concern
Smoothhead catfish
Clarias liocephalus
Clariidae
Least Concern
Edible
Smudge spot cory
Hoplisoma simile
Least Concern
Snail bullhead
Ameiurus brunneus
Ictaluridae
Least Concern
Snaileater
Sargochromis mellandi
Cichlidae
Least Concern
Snake catfish
Clarias theodorae
Clariidae
Least Concern
Snakehead
Channa argus
Channidae
Least Concern
Edible
Snakeskin gourami
Trichopodus pectoralis
Osphronemidae
Least Concern
Edible
Snubnose darter
Etheostoma simoterum
Percidae
Least Concern
Soconusco gambusia
Brachyrhaphis hartwegi
Poeciliidae
Least Concern
Softy hap
Mylochromis mollis
Cichlidae
Least Concern
Edible
Soldatov's catfish
Silurus soldatovi
Siluridae
Least Concern
Soldatov's gudgeon
Gobio soldatovi
Gobionidae
Least Concern
Soldatov's thicklip gudgeon
Sarcocheilichthys soldatovi
Cyprinidae
Least Concern
Someren's suckermouth
Chiloglanis somereni
Mochokidae
Least Concern
Sonora sucker
Catostomus insignis
Catostomidae
Least Concern
Sooty darter
Etheostoma olivaceum
Percidae
Least Concern
Sooty grunter
Hephaestus fuliginosus
Terapontidae
Least Concern
Sorubim Maniradii
Sorubim maniradii
Pimelodidae
Least Concern
South American catfish
Rhamdia quelen
Heptapteridae
Least Concern
South American Darter
Characidium boehlkei
Crenuchidae
Least Concern
South American freshwater stingray
Potamotrygon motoro
Potamotrygonidae
Least Concern
South American Grass Darter
Ammocryptocharax elegans
Crenuchidae
Least Concern