psegma, Abbottina Jordan [D. S.] & Fowler [H. W.] 1903:835, Fig. 5 [Proceedings of the United States National Museum v. 26 (no. 1334); ref. 2463] Yodo River at Osaka, in Settsu, Japan. Holotype: CAS-SU 7721. Paratypes: AMS I.6924 (8); CAS-SU 7144 (9), 7148 (72); USNM 50765 (17). Additional material: ANSP 28470-79 (10), 28481-88 (8, missing); CAS 60931 [ex 10716] (14). Type catalog: Böhlke 1953:29 [ref. 12291], Böhlke 1984:88 [ref. 13621]. •Synonym of Abbottina rivularis (Basilewsky 1855) -- (Okada 1961:420 [ref. 6363], Bogutskaya & Naseka 1996:33 [ref. 22798], Naseka 1998:81 [ref. 23590], Yue in Chen et al. 1998:349 [ref. 23878], Bogutskaya et al. 2008:321 [ref. 30085], Kottelat 2013:69 [ref. 32989], Zhang et al. 2016:70 [ref. 34477] as sigma, Dyldin & Orlov 2016:657 [ref. 34853]). Current status: Synonym of Abbottina rivularis (Basilewsky 1855). Gobionidae. Habitat: freshwater.