Species that contain: Gnathopogon and japonicus [ 2 ] records

japonicus, Squalius Sauvage [H.-E.] 1883:147 [Bulletin de la Société philomathique de Paris (7th Série) v. 7; ref. 3896] Lake Biwa, Japan. Syntypes: MNHN A-6496 (4). Type catalog: Bertin & Estève 1948:88 [ref. 19574]. •Valid as Gnathopogon japonicus (Sauvage 1883) -- (Kuroda 1953:275 [ref. 39545], Okada 1961:430 [ref. 6363]). •Valid as Squalidus japonicus (Sauvage 1883) -- (Sawada in Masuda et al. 1984:56 [ref. 6441], Hosoya & Jeon 1984:41 [ref. 17431], Okamura & Machida 1987:104 [ref. 22279], Naseka 1996:160 [ref. 22943], Kim 1997:213 [ref. 24032], Watanabe 1998:263 [ref. 23491], Nakabo 2000:271 [ref. 25086]). •Valid as Squalidus japonicus (Sauvage 1883), subspecies japonicus -- (Kawanabe & Mizuno 1989:300 [ref. 25598], Matsuura et al. 2000:128 [ref. 26000], Nakabo 2002:271 [ref. 26001]). Current status: Valid as Squalidus japonicus (Sauvage 1883). Gobionidae. Distribution: East Asia: Japan. Habitat: freshwater.

mayedae, Gobio Jordan [D. S.] & Snyder [J. O.] 1900:342, Pl. 9 (fig. 2) [Proceedings of the United States National Museum v. 23 (no. 1213); ref. 2502] Lake Biwa near Karasaki, Japan. Holotype: USNM 49400. Paratypes: CAS-SU 6272 (orig. 15, now 11). Type catalog: Böhlke 1953:32 [ref. 12291]. •Synonym of Gnathopogon japonicus (Sauvage 1883) -- (Okada 1961:430 [ref. 6363]). •Synonym of Squalidus japonicus (Sauvage 1883) -- (Okamura & Machida 1987:104 [ref. 22279], Naseka 1996:160 [ref. 22943]). Current status: Synonym of Squalidus japonicus (Sauvage 1883). Gobionidae. Habitat: freshwater.