Noun | 1. | ![]() fish family - any of various families of fish Isospondyli, order Isospondyli - most primitive teleost fishes; all are soft-finned: salmon; trout; herring; shad; sardines; anchovies; whitefish; smelts; tarpon salmonid - soft-finned fishes of cold and temperate waters salmon - any of various large food and game fishes of northern waters; usually migrate from salt to fresh water to spawn genus Salmo, Salmo - type genus of the Salmonidae: salmon and trout genus Oncorhynchus, Oncorhynchus - Pacific salmon including sockeye salmon; chinook salmon; chum salmon; coho salmon genus Salvelinus, Salvelinus - brook trout |