ALIEN FISHES IN EUROPEAN WATERS Nepůvodní druhy ryb v evropských vodách

The paper summarized published data on alien and alien invasive fishes (Acti- nopterygii) having been found in Europe and its adjacent waters since the 18th century to the present. At least 109 exotic freshwater fish species belonging to 29 families introduced there are documented. Successful introductions (established or acclimatized species at le- ast in some parts of Europe) of non - native freshwater fishes include at least 38 species (mostly of them originate from Asia and North America, lesser from Middle, South Ame- rica or Africa). Within European waters, some alien fishes can be considered invasive alien ones. A total of 160 sea alien (invasive) fish species have been reported from the Black Sea - Mediterranean Basin. Negative influences of invasive alien species to native ichtyo - fauna are discussed by the authors.