potamodromous

A potamodromous fish, like an anadromous or catadromous fish, is a migratory fish.  Unlike anadromous or catadromous fish, a potamodromous fish spends its whole life in fresh water.  Generally, these migrations are for spawning purposes and cover short distances: from an upstream tributary to a mainsteam river or between connected lake and river systems.  Some species, for example the … [Read more…]