Based on differences in morphology and genetics, the blunt-snouted form was split off as a separate species, B.

[5][11] Although the two generally are found in separate areas, there are also regions where their ranges overlap such as the Amur Basin.

[5][6][8][10] Brachymystax savinovi is found in Markakol Lake and adjacent rivers in eastern Kazakhstan.

[16] The recently revalidated Brachymystax tsinlingensis is distributed in streams in the Yellow and Yangtze River basins in the Qinling Mountains of China.

[7] Though overall widespread, lenoks in South Korea are now on the verge of extinction due to deforestation and they have also declined in China.