Found in the Lake Khanka drainage area (Amur river basin). Introduced from the Amur (Siberia) to the European Russia (Ref. 59043). This has been translocated to areas (such as Don, Volga, Sakhalin Island) within the country for aquaculture and stocking in open water. However, it failed to establish populations in areas where it has been transplanted to as reported in 2002 (Ref. 45022). But earlier reports indicated that self-supporting populations existed in the Kuban, Terek, and in some other rivers (Ref. 26334). Native wild stocks are declining (Ref. 59043). EurRus