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Biology

Found in shallow and deep waters of northern lakes and streams and is restricted to relatively deep lakes in the southern part of its range (Ref. 5723). Rarely in brackish water (Ref. 11980). A solitary wanderer, the extent of their movements apparently limited by the size of the lake and individual (Ref. 27547). Although lake trout generally feed on a variety of organisms such as freshwater sponges, crustaceans, insects, fishes (with a preference for ciscoes), and small mammals, some populations feed on plankton throughout their lives (Ref. 27547). Such plankton-feeding lake trout grow more slowly, mature earlier and at smaller size, die sooner and attain smaller maximum size than do their fish-eating counterparts (Ref. 30351). Lake trout are highly susceptible to pollution, especially from insecticides (Ref. 14019, 27547). Utilized as a food fish, its flesh is usually of a yellow or creamy color but may be anything from white to orange (Ref. 27547). Often caught by fishers (Ref. 30578).

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