pleskei, Octonema Herzenstein [S. M.] in Warpachowski & Herzenstein 1888:48, Pl. (fig. 5) [Trudy St.-Peterburgskogo Obscestva Estestvoispytatelej = Travaux de la Société des Naturalistes de St. Pétersbourg. v. 19 (no. 8) (for 1887); ref. 2152] Ilistaya [Lefu] River near Nikolajewka, Khanka Lake basin, Amur River drainage, Russia. Syntypes: BMNH 1891.10.7.73 [ex ZIN] (1), ZIN 7209 (orig. 5, now 4). •Synonym of Lefua costata (Kessler 1876) -- (Berg 1949:887 [ref. 20661], Zhu 1989:20 [ref. 17744], Bogutskaya & Naseka 1996:48 [ref. 22798], Vasil'eva 1998:96 [ref. 23591]). •Valid as Lefua pleskei (Herzenstein 1888) -- (Naseka & Bogutskaya 2004:284 [ref. 27838] dated 1887, Bogutskaya & Naseka 2004:115 [ref. 28183] dated 1887, Bogutskaya et al. 2008:340 [ref. 30085] dated 1887, Parin et al. 2014:103 [ref. 33547] dated 1887, Dyldin & Orlov 2016:671 [ref. 34853], Hosoya et al. 2018:199 [ref. 36197], Ohgita & Matsunuma 2020:11 [ref. 37953], Dyldin et al. 2021:20 [ref. 38804], Dyldin & Orlov 2021:63 [ref. 38158], Dyldin et al. 2023:[9] [ref. 40328]). Current status: Valid as Lefua pleskei (Herzenstein 1888). Nemacheilidae. Distribution: East Asia: Russia and Japan. Habitat: freshwater, brackish.