sachalinensis, Phoxinus percnurus Berg [L. S.] 1907:204 [9] [Ezhegodnik, Zoologicheskago Muzeya Imperatorskoi Akademii Nauk v. 11 (for 1906); ref. 15129] Arakul River, southern Sakhalin Island, Russia. Syntypes: ZIN 13879 (14). Lectotype perhaps established by use of "type" in Berg 1949:577, Fig. 336 [ref. 20661]. See Cyprinus perenurus for comment about spelling [perenurus vs. percnurus]. •Synonym of Phoxinus perenurus (Pallas 1814), but a valid subspecies as described -- (Berg 1949:577 [ref. 20661], Kawanabe & Mizuno 1989:278 [ref. 25598], Watanabe 1998:262 [ref. 23491], Nakabo 2000:264 [ref. 25086], Matsuura et al. 2000:104 [ref. 26000], Pietsch et al. 2001:139 [ref. 25688], Nakabo 2002:264 [ref. 26001]). •Synonym of Moroco percnurus [sic] (Pallas 1814), but a valid subspecies as described -- (Sawada in Masuda et al. 1984:57 [ref. 6441]). •Synonym of Rhynchocypris oxycephalus (Sauvage & Dabry de Thiersant 1874) -- (Howes 1985:71 [ref. 5274]). •Synonym of Phoxinus perenurus (Pallas 1814) -- (Bogutskaya 1998:68 [ref. 23589], Sideleva 2001:51 [ref. 26181], Sideleva 2003:9 [ref. 27815], Bogutskaya & Naseka 2004:95 [ref. 28183] as percnurus, Parin et al. 2014:89 [ref. 33547]). •Synonym of Rhynchocypris percnurus (Pallas 1814). •Valid as Rhynchocypris sachalinensis (Berg 1907) -- (Dyldin & Orlov 2016:665 [ref. 34853], Dyldin & Orlov 2021:67 [ref. 38158], Dyldin et al. 2023:[27] [ref. 40328] with question). Current status: Valid as Rhynchocypris sachalinensis (Berg 1907). Leuciscidae: Pseudaspininae. Distribution: East Asia: Hokkaido (Japan), Sakhalin Island (Russia). Habitat: freshwater.