Lake trout are highly susceptible to pollution. Other fish species include walleye, yellow perch, northern pike, goldeye, lake whitefish, cisco, Arctic grayling, burbot, white sucker and longnose sucker. The substrate is a combination of broken rubble and edged rocks 3-15 cm (1-6 in.) Dark bands may be noticeable on the sides of spawning males, but are not present in every population. Lake trout have an upper lethal temperature of about 23.5°C (74.3°F). Learn about the biology below by clicking on the buttons. Winter angling for lake trout through holes in the ice is a popular sport in some areas. Appearance: Overall gray or nearly black/white coloration, sometimes with yellow tinge on fins. Let’s keep a good thing going. The largest lake trout on a rod and reel is 72 lbs, caught by Lloyd Bull in Great Bear Lake, Canada on July 19, 1991. Lake Athabasca contains 23 species of fish, with a world record lake trout of 46.3 kg (102 lb) caught from its depths in 1961 by means of a gillnet. These are called par marks. The fisherman tried reviving it but it was already dead (gill net). Lake trout eggs are eaten by other fish species, and often by lake trout themselves. Female lake trout are crossed with male speckled trout to produce a fish known as splake, in a process called artificial hybridization. The angling record contains a specimen weighing 32.8 kg (72.25 lb), caught in Great Bear Lake, Northwest Territories, in 1995. Lake trout have an upper lethal temperature of about 23.5°C (74.3°F). It features in the annual lake trout fishing derby of the people of Geneva and New York. Also called the Mackinaw Trout, the lake trout is found mostly in the Fort Peck area with some occurrence in the western part of the state. Lake trout (Salvelinus namaycush) is a freshwater char living mainly in lakes in northern North America. Juveniles are usually found in deeper water than adults. In Nova Scotia, the average lake trout caught is usually less than 2.0 kg (4.4 lb). They also inhabit shallow lakes and rivers, but this is usually in the northern parts of their range. Lake trout do not have the red spots found on speckled trout. Lake trout are easily caught because of their predatory nature. Temperature, light, and wind are factors which contribute to the onset and duration of spawning activities. Certainly, bigger fish exist in Superior. Lake trout spawn on offshore shoals, near shorelines and points near islands exposed to the prevailing winds. Spawning begins when water temperatures fall to 10°C (50°F) and lower. They were fished commercially in the Great Lakes until lampreys, overharvest and pollution extirpated or severely reduced the stocks. Mack Days helps the ecological balance of Flathead Lake by thinning the mackinaw (also called lake trout) population. Mack Days helps the ecological balance of Flathead Lake by thinning the mackinaw (also called lake trout) population. It weighed in at 24.6 kg (54 lb., 4 oz. Lake trout do not construct reds like most other salmonids, nor do they form single mating pairs. Several males may fertilize the eggs. It is illegal however to use live bait in Montana's Flathead Lake. Lake trout scales are unreliable for aging purposes. The eggs hatch between February and April, but the fry do not emerge from the rubble until their yolk sacs are absorbed a month later. Hustle and Fish : Rollcast Productions : Teaser, Fly Fishing Photography : Beck Photographers, Milwaukee River Lake Trout : October 2009. Hatcheries produce splake because this hybrid grows very quickly. The largest lake trout ever taken on the rod and reel weighed 72 pounds, caught on Great Bear Lake Canada in 1991 by Lloyd Bull. The largest lake trout on record in the world was caught in a gill-net on Lake Athabasca in 1961. Namaycush is a North American Indian name that means "dwellers of the deep". 102 lb Muskie. Learn about the biology below by clicking on the buttons. However fins may have traces of orange, white leading edge is often present on fins as well. A narrow white border is present on the lower fins, but it is never as immaculate or as wide as on the fins of a speckled trout. The lake trout is a bottom oriented species regardless of depth. Habitat: Deep, cold lakes and reservoirs. Even during the mating season, the sexes can rarely be distinguished on the basis of color. The lake-trout fishing on the largest expanse of fresh water in the world is nothing less than spectacular. Lake trout have few predators with the exception of man and the sea lamprey, which almost wiped out some Great Lakes stocks following the opening of the Welland Canal between Lake Ontario and Lake Erie in 1829. Lake trout may not spawn every year, and northerly stocks tend to have fewer spawning fish in any one year. Spawning begins when water temperatures fall to 10°C (50°F) and lower. Juveniles are usually found in deeper water than adults. Lake trout do not have the red spots found on speckled trout. Anglers help manage the lake by harvesting over abundant lake trout. It reportedly weighed over 46 kg (102 lb.). 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. Every likely-looking bit of structure has wall-to-wall gray trout in its time and season. The largest lake trout on record weighed 46.3 kg (102 lb), which was caught by the commercial fishery at Lake Athabasca, Saskatchewan in 1961. Body: With white or cream-colored spots (never pink or red) on darker background. Other names for it include mackinaw, namaycush, lake char (or charr), touladi, togue, and grey trout. This was netted by the Deline First Nation on Great Bear Lake, NWT (sustenance fishing). Dark bands may be noticeable on the sides of spawning males, but are not present in every population. Spawning may involve several females laying their eggs into crevices in the rocks or spaces between the rocks. Researchers determine age by reading otoliths, which are calcified tissues of the inner ear used by fish for maintaining equilibrium and balance. Lake trout also feed on aquatic insects, crustaceans, and smaller fish such as minnows, lake whitefish, yellow perch, alewives (gaspereau), and rainbow smelt. Lake trout eggs are eaten by other fish species, and often by lake trout themselves. The oldest fish on record, taken in the Northwest Territories, was aged at 65 years. The angling record contains a specimen weighing 32.8 kg (72.25 lb), caught in Great Bear Lake, Northwest Territories, in 1995. Blows my mind even typing that, as the official world record (with rod and reel) is 72 lbs. Even during the mating season, the sexes can rarely be distinguished on the basis of color. Lake trout also feed on aquatic insects, crustaceans, and smaller fish such as minnows, lake whitefish, yellow perch, alewives (gaspereau), and rainbow smelt. Anglers help manage the lake by harvesting over abundant lake trout. It is also very late to mature. Lake trout have few predators with the exception of man. Egg incubation lasts for four to five months depending on temperature and oxygen levels. This may be a mechanism for survival, because adults are cannibalistic. Also called the Mackinaw Trout, the lake trout is found mostly in the Fort Peck area with some occurrence in the western part of the state. Lake trout are fall spawners and normally reproduce every second year from September to November in most parts of their range. A lake trout weighing 8.6 kg (19 lb) and measuring 81.3 cm (32 inches) was caught in Sherbrooke Lake, Nova Scotia in 1992.Typically, lake trout are long and slender, with a deeply forked caudal fin. 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