Lake trout is a freshwater char living mainly in lakes in northern North America. Other names for it include mackinaw, lake char (or charr), togue, and grey trout. In Lake Superior, it can also be variously known as siscowet, paperbelly and lean. The lake trout is prized both as a game fish and as a food fish.
Lake trout inhabit cold, oxygen-rich waters. They are pelagic during the period of summer stratification in dimictic lakes, often living at depths of 20–60 m (60–200 ft).
Lake trout are the largest of the charrs; the record weighed almost 46.3 kilograms (102 lb) (netted) with a length of 50 inches (127 cm), and 15– to 40-pound fish are not uncommon. The average length is 24-36 inches (61-92 cm). The largest caught on a rod and reel according to the IGFA was 72 pounds (33 kg), caught in Great Bear Lake in 1995 with a length of 59 inches (150 cm)