: the species is currently present in 16 of them (endemic, native, introduced);
: possible in 0 of them (stray, questionable);
: absent from 0 of them (extirpated, not established, misidentification, error).
: all reports listed together.
Distribution: Eurasia: Azov and Black Sea basins. Invasive in rivers of northern Black Sea basin, recorded in 1997 from middle Vistula (Poland), reaching from Dniepr via a navigation canal. In Danube upriver to Hungary, in Dniepr up to Belurus. Introduced in Lake Balaton, Hungary around 1970.
The map in this page was supported by BioFresh that has received funding from the
European Union's Seventh Programme for research, technological development and demonstration under grant agreement No 226874