The Significance of Stone Moroko, Pseudorasbora Parva (Temminck and Schlegel), in the Small-Sized Fish Assemblages in the Littoral Zone of the Heated Lake Licheńskie

摘要: The aim of the study was to determine changes in seasonal abundance stone moroko, Pseudorasbora parva (Temminck and Schlegel), identify role this alien species plays littoral zone a heated lake. This also aimed at defining habitat preferences describing relations between relative moroko occurrence submerged vegetation. A significant dependence determined degree which lake bottom is covered with macrophytes moroko. fish caught belonged 14 2 families. Stone preferred habitats that were abundantly overgrown vegetation avoided areas devoid macrophytes. Thus, as cover increased, so did number fish. In light availability its food preferences, abundant poses serious threat endemic ichthyofauna.