Ichthyofauna of lake Bolshoye Murakanskoe (national park “Onega Pomorie”) and the possibility of using its fish stocks

The species composition and structure of the fish population and the taxonomic diversity of the ichthyofauna of lake Bolshoye Murakanskoye have been established for the first time, a description is given, and data on the biology and state of the fish populations living there are presented. The history of the formation of the lake's ichthyofauna is described, including an unsuccessful attempt to acclimatize peled in it. The belonging of fish to freshwater faunistic complexes and ecological groups is considered. Currently, 5 fish species are found in lake B. Murakanskoye, including such valuable ones as whitefish and vendace. It is noted that the reservoir is the only habitat of the common whitefish (Coregonus lavaretus L.) within the boundaries of the specially protected natural area. The living conditions of the lake's fish population are described – its thermal regime, water chemistry, oxygen supply. The history of fishing on the lake is given. B. Murakanskoe and an assessment of fish stocks in the reservoir at present is given. The calculation of the possible catch is made and recommendations on the fishing regime are proposed.