Salmon Trout

lake trout

 or Mackinaw trout or Great Lakes trout or salmon trout

Large, voracious char (Salvelinus namaycush) found widely from northern Canada and Alaska to New England and the Great Lakes, usually in deep, cool lakes. They are greenish gray and covered with pale spots. In spring, 5-lb (2.3-kg) lake trout are caught in shallow water; in summer, fish of up to 100 lbs (45 kg) are trolled in deep water. Lake trout were virtually eliminated from the Great Lakes by the sea lamprey, which entered through the Welland Canal in the 1930s. They have been introduced in the western U.S., South America, Europe, and New Zealand.

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Salmon Trout 

(Salmo trutta), a fish of the family Salmonidae. The body is covered with small black spots. It is found along the seacoasts of Europe. The typical salmon trout is diadromous, living in the sea for four years and reaching a length of up to 1 m and a weight of up to 13 kg. It feeds on small fish and large crustaceans. It enters rivers for spawning, which occurs between October and December. The fry live in the rivers for two to seven years and then migrate to the sea. Distinctive subspecies of the salmon trout inhabit the southern seas of the USSR. These subspecies include the Black Sea salmon (Salmo trutta labrax, weighing up to 24 kg), the Caspian salmon (S. t. caspius, sometimes weighing over 50 kg), and the Aral salmon (S. t. aralensis, same dimensions as the salmon trout). There are also freshwater forms of the salmon trout, for example, the lake trout (S. t. lacustris) and the brook, or river, trout (S. t. fario). Salmon trout are of great commercial value, and their number has been greatly depleted by man. Both diadromous and freshwater forms are bred.