Grayling

(Thymallus), any of several troutlike game fishes, family Salmonidae, found in cold, clear streams of Eurasia and northern North America. Graylings are handsome, silvery-purple fishes, which reach a length of about 40 cm (16 inches). They have rather large scales, large eyes, a small mouth with feeble teeth, and a saillike, brightly coloured dorsal fin, with 20 to 24 rays. They feed primarily