Like all char the lake trout is a fall spawner and it is a North American original with the broadest distribution of any North American native salmonid. Its native range spans all of Canada right into the arctic islands. I have caught lake trout on Victoria Island at latitude of 72 degrees north. At this extreme edge of their range lakers get long but not fat. I recall one that came out of a rapids between two lakes that measured 44 inches but didn’t weigh 18 pounds, a real rail. In the US lake trout are native to the Great Lakes and selected deep lakes in the upper Midwest and New England where they are called “togue”. In the western US where they were introduced they are usually called Mackinaw trout or just Macks.