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.https://fish.mongabay.com/data/Isle_of_Man.html
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)
References