baicalensis, Squalidus Dybowski [B. N.] 1874:388, Pl. 5 (fig. 1) [Verhandlungen der K.-K. zoologisch-botanischen Gesellschaft in Wien v. 24 (no. 3-4); ref. 1172] Rivers of the Baikal Lake system, Russia. Syntypes: ZMB 7941 (1). For remarks on systematics see Kottelat 2006:37-38 [ref. 28831]. •Synonym of Leuciscus leuciscus (Linnaeus 1758) -- (Kottelat 1997:68 [ref. 22952]). •Valid as Squalidus baicalensis Dybowski 1874 -- (Luo in Chen et al. 1998:69 [ref. 23878]). •Synonym of Leuciscus leuciscus (Linnaeus 1758), but a valid subspecies -- (Berg 1949:546 [ref. 20661], Yang & Hwang 1964:31 [ref. 13497], Mitrofanov et al. 1987:80 [ref. 37731], Zhu 1995:31 [ref. 25213], Chereshnev 1996:600 [ref. 24659] as baikalensis, Reshetnikov et al. 1997:738 [ref. 24702], Bogutskaya 1998:64 [ref. 23589], Koch & Paepke 1998:162 [ref. 23652], Mitrofanov 2000:42 [ref. 25139], Chereshnev et al. 2001:42 [ref. 26736], Sideleva 2001:50 [ref. 26181], Sideleva 2003:8 [ref. 27815], Bogutskaya & Naseka 2004:85 [ref. 28183], Parin et al. 2014:83 [ref. 33547]). •Valid as Leuciscus baicalensis (Dybowski 1874) -- (Kottelat 2006:37 [ref. 28831], Ocock et al. 2006:38 [ref. 28933], Kottelat & Freyhof 2007:208 [ref. 29996], Zhang et al. 2016:53 [ref. 34477], Romanov et al. 2017:821 [ref. 35687], Dyldin et al. 2023:[32] [ref. 40328]). Current status: Valid as Leuciscus baicalensis (Dybowski 1874). Leuciscidae: Leuciscinae. Distribution: North Asia: Lake Baikal basin (Russia); ?China. IUCN (2020): Least Concern. Habitat: freshwater.