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.