Known from the European Black Sea watersheds and western Anatolian lake watersheds (Ref. 58342); in Marmara basin, south to Great Menderes and Lake Egridir and east to Kızılırmak drainage, but absent between Kızılırmak and Çoruh drainages (Ref. 59043). Enters all rivers of the Black sea coast, also inhabits lakes in Northwestern Anatolia and Egridir Gölü in Central Anatolia which has no connections with river basins (Ref. 33550); also known from Lake Sapanca (Ref. 107309). Threatened by habitat loss, eutrophication/pollution and construction of weirs/dams in rivers (Ref. 58342). Also Ref. 683, 106151.

Status of threat: Data deficient (Ref. 58342). EurTurk.