hainanensis, Sarcocheilichthys Nichols [J. T.] & Pope [C. H.] 1927:352, Fig. 21, Pl. 26 (fig. 3) [Bulletin of the American Museum of Natural History v. 54 (art. 2); ref. 5747] Nodoa, Hainan Island, China. Holotype: AMNH 8370. Additional material: AMNH 10536 (1), 10556 (1). •Synonym of Sarcocheilichthys nigripinnis (Günther 1873), but a valid subspecies -- (Bănărescu & Nalbant 1967:294 [ref. 20624], Yu in Kuang et al. 1986:96 [ref. 26639], Jin in Pan et al. 1991:198 [ref. 23876], Zhu 1995:76 [ref. 25213]). •Synonym of Sarcocheilichthys nigripinnis (Günther 1873) -- (Lu et al. 1977:474 [ref. 2850], Mai 1978:190 [ref. 13511], Yue in Chen et al. 1998:277 [ref. 23878]). •Valid as Sarcocheilichthys hainanensis Nichols & Pope 1927 -- (Kottelat 2001:39 [ref. 25482], Kottelat 2001:79 [ref. 25780], Kottelat 2013:158 [ref. 32989], An et al. 2020:217 [ref. 37481]). Current status: Valid as Sarcocheilichthys hainanensis Nichols & Pope 1927. Gobionidae. Distribution: Hainan Island, China. Habitat: freshwater.