Karyotypes of the Sailfin Sculpins (Pallas, 1814), (Pallas, 1814), and Cuvier, 1829 (Actinopterygii: Hemitripteridae)

The karyotypes of the sailfin sculpins and were studied for the first time, and the chromosome set of was analyzed. It was found that the karyotypes of these species are stable and consist of 46 chromosomes (2n) in : 4 metacentric (M), 32 subtelocentric (ST), and 10 acrocentric (A); the number of chromosome arms (NF) is 50. In , the chromosome set is 2n = 48 (34 ST and 14 A chromosomes), NF = 48; in , 2n = 48 (36 ST and 12 A chromosomes), NF = 48. Based on comparative karyological analysis, common features were identified that confirm the close relationships between and , and the taxonomic proximity of to species of the genus . The features that allow differentiation of the studied species were also determined.