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The native char of Sunapee Lake, New Hampshire (Sunapee golden trout, S. alpinus oquassa), was stocked into Idaho lakes in 1925. It is known to persist in two lakes. I examined gillnet samples from one of the Idaho lakes which contained 12 brook trout and 12 Sunapee char. The largest char (495 mm) was considerably larger than the largest brook trout (225 mm). I noted the largest char in this Idaho lake attain their large size by cannibalizing their own young, a characteristic of large S. alpinus that has been commonly reported in the literature. Johnson (1980, 1983) presented comprehensive information on Arctic char, particularly of populations within the Arctic Circle of northern Canada. Nordeng (1983) experimentally demon- strated the great plasticity in behavior types of S. alpinus in Norway (but Nordeng is wrong in his belief. that he "solved the char problem"). Hindar and Jonsson (1982) detailed the variety of food and habitats utilized by Arctic char in a Norwegian lake. Skreslet (1973a,b) concluded that gull droppings were a major food supply to-char in an Arctic lake on Jan Mayen Island. Fraser (1981) studied an Arctic char population in isolation and compared it with a char population coexisting with-and exhibiting interactive segregation from lake trout and brook trout. Papst and Hopky (1983) provided data on growth of Arctic char (of Arctic Circle origin) in a Manitoba hatchery. These references allow some insight into the potential of S. alpinus for fisheries management and aquaculture. It appears that northernmost-populations of Arctic char have evolved the capabilities for intense feeding and rapid growth at low temperatures to survive in Aretic waters with a short growing season. Johnson (1980) noted intense feeding of char in marine waters where the water temperature was -1.4°C (indicating that Arctic char may have some form of "anti-freeze". in their blood). These same char (anadromous S. alpinus of northern Canada) attain a maximum size of 12-13 kg despite a growing season of about two months or less each year. They also attain a great maximum age -- to 25 years and ,more. First generation Arctic Circle char from wild parents were raised in a Manitoba hatchery in 13°C water and fed a standard trout ration (Papst and Hopky 1983). As would be expected with unselected, wild salmonids, growth under artificial conditions was highly variable. After 209 days of rearing, weights of , individual fish varied from 10 to 530 (mean 158g). Their overall average growth increment of_ 1.9% per day between days 70-154 indicates the potential this particular form of Arctic char holds for aquaculture. Two control groups of domesticated hatchery rainbow trout raised under similar conditions exhibited average growths of 1.4 and 1.9% per day.