Found in the Siberian rivers from the Ob to Kolyma, in Lake Baikal, and rarely in the Pechora (Ref. 26334). Known as Acipenser baerii stenorrhynchus from River Yenisei, River Lena and east Siberian rivers (Ref. 12255). This has been translocated to areas for aquaculture and stocking in open waters within the country. However, it failed to establish populations in areas where it has been transplanted to (Ref. 45022) such as in the Volga River drainage (Ref. 58297). Endangered in the Indigirka river. Also Ref. 6866, 43202. nEurRus