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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
Okavango robber
Rhabdalestes maunensis
Alestidae
Least Concern
Edible
Okavango suckermouth
Chiloglanis fasciatus
Mochokidae
Least Concern
Okavango tilapia
Tilapia ruweti
Cichlidae
Least Concern
Edible
Okefenokee pygmy sunfish
Elassoma okefenokee
Elassomatidae
Least Concern
Oligosarcus Acutirostris
Oligosarcus acutirostris
Acestrorhamphidae
Least Concern
Oligosarcus Argenteus
Oligosarcus argenteus
Acestrorhamphidae
Least Concern
Oligosarcus Bolivianus
Oligosarcus bolivianus
Acestrorhamphidae
Least Concern
Oligosarcus Brevioris
Oligosarcus brevioris
Acestrorhamphidae
Least Concern
Oligosarcus Hepsetus
Oligosarcus hepsetus
Acestrorhamphidae
Least Concern
Oligosarcus Jacuiensis
Oligosarcus jacuiensis
Acestrorhamphidae
Least Concern
Oligosarcus Jenynsii
Oligosarcus jenynsii
Acestrorhamphidae
Least Concern
Edible
Oligosarcus Longirostris
Oligosarcus longirostris
Acestrorhamphidae
Least Concern
Oligosarcus Macrolepis
Oligosarcus macrolepis
Acestrorhamphidae
Least Concern
Oligosarcus Oligolepis
Oligosarcus oligolepis
Acestrorhamphidae
Least Concern
Oligosarcus Paranensis
Oligosarcus paranensis
Acestrorhamphidae
Least Concern
Oligosarcus Perdido
Oligosarcus perdido
Acestrorhamphidae
Least Concern
Oligosarcus Planaltinae
Oligosarcus planaltinae
Acestrorhamphidae
Least Concern
Oligosarcus Robustus
Oligosarcus robustus
Acestrorhamphidae
Least Concern
Olive barb
Systomus sarana
Cyprinidae
Least Concern
Olive cory
Hoplisoma ehrhardti
Least Concern
Olive cory
Corydoras ehrhardti
Callichthyidae
Least Concern
Olivegreen ufipa barb
Enteromius olivaceus
Cyprinidae
Least Concern
Olympic mudminnow
Novumbra hubbsi
Esocidae
Least Concern
Olyra Kempi
Olyra kempi
Olyridae
Least Concern
Olyra Longicaudata
Olyra longicaudata
Olyridae
Least Concern
Omo lampeye
Eremodon jeanneli
Least Concern
Ompok Hypophthalmus
Ompok hypophthalmus
Siluridae
Least Concern
Ompok Siluroides
Ompok siluroides
Siluridae
Least Concern
Ompok Urbaini
Ompok urbaini
Siluridae
Least Concern
One spot toothcarp
Phalloceros uai
Poeciliidae
Least Concern
One-and-a-half-stripe hap
Protomelas insignis
Cichlidae
Least Concern
Edible
One-stripe spinyeel
Macrognathus aral
Mastacembelidae
Least Concern
Edible
Oneline pencilfish
Nannostomus unifasciatus
Lebiasinidae
Least Concern
Edible
Oneline tetra
Nannaethiops unitaeniatus
Distichodontidae
Least Concern
Onesided livebearer
Jenynsia multidentata
Anablepidae
Least Concern
Edible
Onesided livebearer
Jenynsia lineata
Anablepidae
Least Concern
Edible
Onespot barb
Puntius terio
Cyprinidae
Least Concern
Edible
Onespot squeaker
Synodontis notatus
Mochokidae
Least Concern
Onestriped livebearer
Jenynsia unitaenia
Anablepidae
Least Concern
Onychostoma Fangi
Onychostoma fangi
Cyprinidae
Least Concern
Onychostoma Fusiforme
Onychostoma fusiforme
Cyprinidae
Least Concern
Onychostoma Macrolepis
Onychostoma macrolepis
Cyprinidae
Least Concern
Onychostoma Meridionale
Onychostoma meridionale
Cyprinidae
Least Concern
Onychostoma Minnanense
Onychostoma minnanense
Cyprinidae
Least Concern
Opsaridium Loveridgii
Opsaridium loveridgii
Cyprinidae
Least Concern
Opsaridium Ubangiense
Opsaridium ubangiense
Cyprinidae
Least Concern
Opsariichthys Bidens
Opsariichthys bidens
Cyprinidae
Least Concern
Opsariichthys Evolans
Opsariichthys evolans
Cyprinidae
Least Concern