![]() There is the common lake trout ( Salvelinus namaycush namaycush), the siscowet lake trout ( Salvelinus namaycush siscowet), and the less common rush lake trout ( Salvelinus namaycush huronicus). There are three subspecies of lake trout. Another threat to lake trout is acidification, which can have longterm effects on their populations through both direct harm and reduced prey populations (e.g. Many native lake trout populations have been severely damaged through the combined effects of hatchery stocking (planting) and over harvest. Populations are extremely susceptible to overfishing. The lake trout is a slow-growing fish, typical of oligotrophic waters. They are pelagic during the period of summer stratification in dimictic lakes, often living at depths of 20–60 m (66–197 ft). Lake trout inhabit cold, oxygen-rich waters. 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). The average length is 24–36 inches (61–91 centimetres). Lake trout are the largest of the chars the record weighed almost 102 pounds (46 kg) (netted) with a length of 50 inches (130 cm), and 15–40-pound (6.8–18.1-kilogram) fish are not uncommon. Although lake trout were introduced into Yellowstone National Park's Shoshone, Lewis and Heart lakes legally in the 1890s, they were illegally or accidentally introduced into Yellowstone Lake in the 1980s where they are now considered invasive. Lake trout have been widely introduced into non-native waters in North America and into many other parts of the world, mainly Europe, but also into South America and certain parts of Asia. They are native only to the northern parts of North America, principally Canada, but also Alaska and, to some extent, the northeastern United States. Range įrom a zoogeographical perspective, lake trout have a relatively narrow distribution. agasizii)) but still basal to the other members of Salvelinus. It is the only member of the subgenus Cristovomer, which is more derived than the subgenus Baione (the most basal clade of Salvelinus, containing the brook trout ( S. Those caught with dark coloration may be called mud hens. ![]() The lake trout is prized both as a game fish and as a food fish. In Lake Superior, it can also be variously known as siscowet, paperbelly and lean. Other names for it include mackinaw, namaycush, lake char (or charr), touladi, togue, and grey trout. The lake trout ( Salvelinus namaycush) is a freshwater char living mainly in lakes in northern North America.
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