The following is a list of the freshwater fish species of the Isle of Man. There are ten recorded species. The list has been generated from FishBase.^[1]

Anguilliformes

Anguillidae

• Anguilla anguilla

European eel (Manx: Astan) (native)

Salmoniformes

Salmonidae

• Coregonus lavaretus

Common whitefish (questionable)

• Salmo salar

Atlantic salmon (Manx: Braddan) (native)

• Salmo trutta trutta

Sea trout (native)

Gasterosteiformes

Gasterosteidae

• Gasterosteus aculeatus aculeatus

Three spined stickleback (Manx: Jacksharp) (native)

Perciformes

Gobiidae

• Gobius paganellus

Rock goby (native)

Petromyzontiformes

Petromyzontidae

• Lampetra fluviatilis

European River Lamprey (native)

Syngnathiformes

Syngnathidae

• Nerophis ophidion

Straight nosed pipefish (native)

Osmeriformes

Osmeridae

• Osmerus eperlanus

European smelt (native)

Petromyzontiformes

Petromyzontidae

• Petromyzon marinus

Sea lamprey (native)