kaganowskii, Cottus Berg [L. S.] 1932:17, Figs. 1-2 [Copeia 1932 (no. 1); ref. 16356] Belaya River to the mouth, Anadyr River system, northeastern Siberia, Russia. Syntypes: ZIN 23140-41 (1, 1), 23805-09 (23, 20, 2, 1, 1). Type catalog: Sideleva & Zhidkov 2021:236 [ref. 38705]. •Valid as Cottus kaganowskii Berg 1932 -- (Berg 1949:1152 [ref. 20662]). •Synonym of Cottus cognatus Richardson 1836 -- (Lee et al. 1980:808 [ref. 22416], Sideleva 1998:151 [ref. 23595], Sheiko & Fedorov 2000:27 [ref. 25650], Parin et al. 2002:S73 [ref. 28300], Sideleva & Zhidkov 2021:237 [ref. 38705]). Current status: Synonym of Cottus cognatus Richardson 1836. Cottidae. Habitat: freshwater, brackish.