Lenoks, otherwise known as Asiatic trout or Manchurian trout, are salmonid fish of the genus Brachymystax, native to rivers and lakes in Mongolia, Kazakhstan, wider Siberia (including Russian Far East), Northern China and Korea.
Lenoks can be sharp-snouted (B. lenok) or blunt-snouted (B. tumensis). Traditionally both these were included in B. lenok, but today they are recognized as separate species. They are relatively round in shape, and speckled with dark brown spots on their sides and back. Their ventrals are usually colored a reddish hue, and their pectoral fins yellowish. They can weigh up to 15 kilograms (33 lb), and can reach a total length of 1.05 m (3.4 ft). Although the two are generally found in separate areas, there are regions where their ranges overlap, such as the Amur Basin.