WHITEFISH, the name of fishes of the genus Coregonus of the salmon family. These are silvery fishes with rather large scales, and with a small toothless or feebly toothed mouth; they feed on minute crustaceans. Marine species, entering rivers to breed, are chiefly arctic, but a number of fresh-water species inhabit Europe and North America, especially in lakes. Few
species of Coregonus reach a length of more than 18 inches.