Distribution
Europe and Asia: Baltic, Black, northern Caspian and North Sea basins, Atlantic basin southward to Seine and lower Loire drainages (France). Absent in Scandinavia north of 69?N. In Asia, eastward to Lena drainage and Aral basin. Introduced to Great Britain and northern Italy (Ref. 59043). Transported to several countries in Europe and the United States for ornament (Ref. 4537).