homozonus, Barbus Günther [A.] 1868:137 [Catalogue of the fishes in the British Museum v. 7; ref. 1990] Japan. Replacement name for Capoeta gracilis Temminck & Schlegel 1846, preoccupied by Barbus gracilis Jerdon 1849 when Günther placed Capoeta gracilis in Barbus. Perhaps qualifies as a nomen protectum. •Treated as a synonym of Gnathopogon gracilis (Temminck & Schlegel 1846) -- (Okada 1961:436 [ref. 6363]). •Treated as a synonym of Squalidus gracilis (Temminck & Schlegel 1846) -- (Okamura & Machida 1987:104 [ref. 22279]). Current status: Synonym of Squalidus gracilis (Temminck & Schlegel 1846). Gobionidae. Distribution: Japan. Habitat: freshwater.