Trout

Trout, any of several relatives of the salmon, native to the Northern Hemisphere. Trouts are prized as game and food fishes. Like salmon, trout can be recognized by the fleshy, adipose fin. Some trout spend all their lives in fresh waters, favoring clear, well-aerated streams or lakes, but others live in the sea and return to river beds to breed. Various species include the brown trout, imported from Europe, the rainbow trout of western states, and the red-spotted Dolly Varden. The lake, or mackinaw, trout of deep lakes used to be netted by the ton in the Great Lakes until the arrival of lampreys.