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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
Mai-ndombe dwarf sprat
Nannothrissa stewarti
Dorosomatidae
Endangered
Malabar mahseer
Tor malabaricus
Cyprinidae
Endangered
Malabar swampeel
Ophichthys fossorius
Endangered
Maluti minnow
Pseudobarbus quathlambae
Cyprinidae
Endangered
Manantial roundnose minnow
Dionda argentosa
Cyprinidae
Endangered
Mancilik dwarf loach
Oxynoemacheilus paucilepis
Nemacheilidae
Endangered
Manyara tilapia
Oreochromis amphimelas
Cichlidae
Endangered
Manyas shemaya
Alburnus carinatus
Cyprinidae
Endangered
Maracaibo river stingray
Potamotrygon yepezi
Potamotrygonidae
Endangered
Marbled lyretail
Fundulopanchax marmoratus
Nothobranchiidae
Endangered
Edible
Marbled Madagascar cichlid
Ptychochromoides vondrozo
Cichlidae
Endangered
Marbled whipray
Fluvitrygon oxyrhynchus
Dasyatidae
Endangered
Marcusenius Caudisquamatus
Marcusenius caudisquamatus
Mormyridae
Endangered
Marcusenius Meronai
Marcusenius meronai
Mormyridae
Endangered
Marmara sprat
Clupeonella muhlisi
Ehiravidae
Endangered
Martenstyn's barb
Systomus martenstyni
Cyprinidae
Endangered
Edible
Mary River cod
Maccullochella mariensis
Percichthyidae
Endangered
Mastacembelus Oatesii
Mastacembelus oatesii
Mastacembelidae
Endangered
Matilebias Camaquensis
Matilebias camaquensis
Endangered
Matilebias Cyaneus
Matilebias cyaneus
Endangered
Matilebias Ibicuiensis
Matilebias ibicuiensis
Endangered
Mazarunia Pala
Mazarunia pala
Endangered
Mbeka
Tropheus annectens
Cichlidae
Endangered
Mekong stingray
Hemitrygon laosensis
Dasyatidae
Endangered
Melanorivulus Ivinhemensis
Melanorivulus ivinhemensis
Rivulidae
Endangered
Melanorivulus Pinima
Melanorivulus pinima
Rivulidae
Endangered
Melanorivulus Scalaris
Melanorivulus scalaris
Rivulidae
Endangered
Melanorivulus Vittatus
Melanorivulus vittatus
Rivulidae
Endangered
Meleiro livebearer
Jenynsia sanctaecatarinae
Anablepidae
Endangered
Mendes' tube-snouted ghost knifefish
Sternarchorhynchus mendesi
Apteronotidae
Endangered
Mesogobio Lachneri
Mesogobio lachneri
Endangered
Mesoheros Gephyrus
Mesoheros gephyrus
Cichlidae
Endangered
Mexican brook lamprey
Tetrapleurodon geminis
Endangered
Mexican rivulus
Millerichthys robustus
Endangered
Mezquital pupfish
Cyprinodon meeki
Cyprinodontidae
Endangered
Micralestes Eburneensis
Micralestes eburneensis
Alestidae
Endangered
Micropanchax Bracheti
Micropanchax bracheti
Poeciliidae
Endangered
Microphis Pleurostictus
Microphis pleurostictus
Syngnathidae
Endangered
Microphysogobio Koreensis
Microphysogobio koreensis
Gobionidae
Endangered
Minkley's cichlid
Herichthys minckleyi
Cichlidae
Endangered
Edible
Minnow-nase
Chondrostoma phoxinus
Cyprinidae
Endangered
Mogurnda Kaifayama
Mogurnda kaifayama
Eleotridae
Endangered
Mormyrops Oudoti
Mormyrops oudoti
Mormyridae
Endangered
Moroco
Pseudorasbora pumila
Cyprinidae
Endangered
Mountain molly
Poecilia teresae
Poeciliidae
Endangered
Mubi rainbowfish
Melanotaenia mubiensis
Melanotaeniidae
Endangered
Mugilogobius Adeia
Mugilogobius adeia
Gobiidae
Endangered
Mugilogobius Cagayanensis
Mugilogobius cagayanensis
Gobiidae
Endangered