Reached the Baltic basin through the artificial channel connecting the Pripet and Bug rivers. Recorded from the Bug river (left tributary of the Vistula) in 1995 and has until now colonized the Vistula to its downstream section (Ref. 52518). Has invaded the littoral of oligohaline zone of sea bays, lower courses of large lowland rivers. Prefers bottoms covered by sand and rock with little mud, often densely vegetated with vascular flora. Control of the species should be considered. Influence on native fishes in future is difficult to predict. Prevention of further spread appears to be impossible (Ref. 55773). Natural range expansion was facilitated by human activities (Ref. 92885).