arachlensis, Paracottus kessleri Tarkhova [Yu. N.] 1962:103 [Kratkiie soobscenjia Burjatskij Kompleksnogo Naucno-Issledovatel'skogo Instituta, Akademija Nauk SSR, Sibirskoe Otdelenie, Burjatskij Kompleksnyi Nauno-Issledovatel'skij Institut. No. 3; ref. 22756] Lake Arakhlei, Lake Baikal Basin, Russia. Neotype: ZIN 34220. Original not seen. Neotype designated by Sideleva 2003:154 [ref. 27815]. •Synonym of Cottus kesslerii Dybowski 1874, but a valid subspecies -- (Sideleva 1982 [ref. 14469], Sideleva 1998:152 [ref. 23595]). •Synonym of Leocottus kesslerii (Dybowski 1874), but a valid subspecies arachlensis (Tarkhova 1962) as described -- (Sideleva 2001:60 [ref. 26181], Sideleva 2003:154 [ref. 27815], Kottelat 2006:60 [ref. 28831]). •Synonym of Leocottus kesslerii (Dybowski 1874) -- (Bogdanov 2023:75 [ref. 40329]). Current status: Synonym of Leocottus kesslerii (Dybowski 1874). Cottidae. Habitat: freshwater.