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). |