The Sunapee trout is often a foot long and is said to actually be silver in color. It is a distinct strain of Arctic char, having become trapped by changed drainage systems and climates in numerous lakes and ponds in
New England and southeastern Québec. The lake for which this subspecies is most noted for is
Sunapee Lake in New Hampshire. In the wake of the retreating
glacial front approximately 8,000 years ago, following the end of the
last ice age, the Arctic char, an extremely coldwater, anadromous fish, was still spawning in New England. After the climate changed sufficiently, anadromous Arctic char stopped spawning in New England, leaving several lacustrine populations of Arctic char cut off from the bulk of the species in deep, cold, clear lakes in Vermont, New Hampshire, Maine, and Québec. The lake populations of Arctic char in Maine are termed "blueback trout," those in Québec are termed "Québec red trout," and the populations that used to exist in Vermont and New Hampshire along with the current population in Floods Pond, Maine, are termed Sunapee golden trout. The Sunapee Lake strain of the Sunapee trout was discovered in 1977 when Kent Ball, of Idaho Fish and Game, discovered a char species living with
brook trout in a mountain lake in Idaho. Analysis by
Robert Benhke, Eric Wagner, and Steve Culver proved the species to be a presumably introduced population of Sunapee trout. Later research found reports of a trout egg trade between the Idaho and the New Hampshire Fish and Game departments. They are reportedly found in two Idaho bodies of water,
Alice and
Sawtooth Lakes. == Decline in New England ==