Sinanodonta woodiana (Lea, 1834) is an alien species in the fauna of Poland. It comes from the catchment area of the rivers Amur and Yangtze. In Poland it was found in the early 1980s in the system of heated lakes near Konin (Kujawy Lake District, C-Poland). It appeared there together with the silver carp Hypophthalmichthys molitrix (Valenciennes, 1884) and big-heated carp Aristichthys nobilis (Richardson, 1845) introduced from Hungary. In 2003 it was found in the release channel of cooling water from the Dolna Odra power plant. In the years 2004-2005 an inventory of the Międzyodrze (N-W Poland) channels was made in order to determine the current range of occurrence of S. woodiana in the Western Pomerania Region. The mussels were found at five localities below the release of the cooling water. The channels are partly frozen in winter, which indicated the adaptation abilities of this species to waters typical of temperate zone. In the outer demibranch marsupia of females the presence of glochidia was detected, which pointed to the readiness of the mussels for reproduction.
Dispersal of the exotic bivalve Corbicula fluminea has been observed in Europe for more than 20 years. In October 2003, the bivalve was for the first time recorded in Poland; its first Polish site is the heated water canal of the Dolna Odra power station in Western Pomerania.