kesslerii, Cottus Dybowski [B. N.] 1874:384, Pl. 2 (fig. 1) [Verhandlungen der K.-K. zoologisch-botanischen Gesellschaft in Wien v. 24 (no. 3-4); ref. 1172] Lake Baikal; Angara, Irkut and Selenga rivers, Siberia, Russia. Syntypes: BMNH 1897.7.5.5 (1), ZMB 7807 (4). Type catalog: Paepke & Fricke 1992:283 [ref. 19946]. •Valid as Paracottus kessleri (Dybowski 1874) -- (Taliev 1955:243 [ref. 4316]). •Valid as Cottus kesslerii Dybowski 1874 -- (Berg 1949:1153 [ref. 20662] as kessleri, Sideleva 1982:27 [ref. 14469] as kessleri, Reshetnikov et al. 1997:758 [ref. 24702], Sideleva 1998:151 [ref. 23595]). •Valid as Leocottus kesslerii (Dybowski 1874) -- (Bogutskaya et al. 2001:46 [ref. 26178], Sideleva 2001:59 [ref. 26181], Kontula et al. 2003:149 [ref. 26791], Sideleva 2003:16, 151 [ref. 27815], Bogutskaya & Naseka 2004:189 [ref. 28183], Kottelat 2006:60 [ref. 28831], Ocock et al. 2006:58 [ref. 28933], Goto et al. 2014:[15] [ref. 33456], Bogdanov 2015:386 [454] [ref. 37122], Bogdanov 2023:74 [ref. 40329]). Current status: Valid as Leocottus kesslerii (Dybowski 1874). Cottidae. Distribution: North Asia: Lake Baikal and tributaries (Russia and Mongolia). Habitat: freshwater.