Brachymystax tumensis

Brachymystax tumensis, commonly known as the blunt-snouted lenok or Tumen lenok, is a salmonid fish distributed in rivers and lakes in Eastern Asia. It was formerly included in the more widespread species Brachymystax lenok, but more recent research based on differences in morphology and genetics have justified a distinction of the two species.
Brachymystax tumensis is found widely in southeastern Russia and more locally in northeastern and central parts of the country, as well as northeastern Mongolia, northern China and Korea. In some regions, such as the Amur Basin, the range may overlap with that of B. lenok. Earlier authorities have included the South Korean population in B. tsinlingensis instead of B. tumensis and this appears to be supported by mtDNA.