[The results of a study of the species composition of parasites in fishes of the river basins in northeastern European Russia. Cestodes (Cestoda)].

The report contains the results of faunistic study of parasitic cestodes occurring in fishes in the S. Dvina, Mezen' and Pechora river basins. 26 cestode species have been recorded in the region explored. The cestode fauna in the first basin is represented by 19 species, in the second basin--14, in the third basin--18.