Siscowet
(Salvelinus namaycush siscowet)

Length: 17-33 inches [43-85 cm]
Weight: 3-9 pounds [1.4-4 kilograms]
Coloring: back, sides and head light green or gray with light spots; white underside
Common Names: fat lake trout, fat trout, fats, half-breed, fat char
Great Lakes Habitat: Lake Superior

The siscowet, or "fat" lake trout, is found only in the deep, cold waters of Lake Superior. In fact, this fish is usually caught at depths around 500 feet and may live its entire life at water temperatures no warmer than 40 degrees F.