The annotated list of lampreys and fish of the State nature reserve "Ust-Lensky" (Lena River, Laptev Sea basin)
The paper considers the modern taxonomic composition and distribution of lampreys and fish in the state nature reserve "Ust-Lensky" (delta of the Lena River). The modern taxonomic composition of lampreys and fish inhabiting the reservoirs of the reserve includes 2 classes, 11 orders, 14 families, 21 genus, 29 species. Freshwater fish (including migratory and semi-migratory) include 25 taxa from 18 genera, 12 families and 9 orders, among them species of whitefish predominate. The fauna of marine fish is represented by 4 species from 4 genera, 3 families and 3 orders. According to the types of areals, marine fish have their main distribution in the Arctic.