The Grayling (lat. Thymallus thymallus) IS a cold-water fish in the salmon family. The grayling prefers cold, clean rivers and streams with strong flows, but also occurs in lakes and, exceptionally, in brackish waters.
The Grayling are typically smaller than trout. The grayling grows up to 4 kg (8.8 lb) and a maximum recorded length of 76 cm (30 in). Individuals of the species have been recorded as reaching an age of 14 years. The Grayling feeds on vegetable matter, as well as insects, crustaceans and spiders, zooplankton, molluscs and smaller fishes.