First information about the fishes of lake butakovo (“Shushensky bor” national park)

An inventory of the biological diversity of specially protected natural areas is a necessary basis for understanding the patterns of formation and functioning of reference natural complexes, planning work on their monitoring and environmental protection measures, and also serves the objectives of educational work. Fishes of the Yenisei river basin has been relatively well studied, but there is no data about ichthyofauna of the water bodies of the Shushensky Bor National Park (located in the south of the Krasnoyarsk Territory). During this study in lake Butakovo, which is part of the lake-marsh massif “Shushensky Marshes“ on the territory of the Perovsky cluster of the Shushensky Bor National Park, 4 species of fish were noted. Of these, the prussian carp Carassius gibelio (Bloch, 1782), the crucian carp C. carassius (Linnaeus, 1758) and the tench Tinca tinca (Linnaeus, 1758) are typical fishes of the Minusinsk Hollow. The belica Leucaspius delineatus (Heckel, 1843) is alien species, relatively recently recorded in the Yenisei river basin. Finding of the belica in lake Butakovo is currently the southernmost recorded habitat of this invasive species in the Yenisei river basin. In the structure of the fish community in lake Butakovo is dominated by C. gibelio. It is super dominant both in numbers and in biomass. The C. carassius should be classified as the dominant species, and the T. tinca should be classified as common. The L. delineatus, which is 5% in number, due to its small size forms only 1% of the ichthyomass, while, according to the classification of Tereshchenko and Nadirov, it should be classified as a common species.