hainanensis, Eleotris Chen [J. T. F.] 1933:370, Figs. 1-2 [Bulletin du Muséum National d'Histoire Naturelle (Série 2) v. 5 (no. 5); ref. 16476] Hoihow, northern Hainan Island, China. No types known. •Synonym of Eleotris oxycephala Temminck & Schlegel 1845 -- (Wu & Ni in Kuang et al. 1986:265 [ref. 26639], Wu in Pan et al. 1991:429 [ref. 23876]). •Synonym of Eleotris melanosoma Bleeker 1853 -- (Wu in Pan et al. 1991:431 [ref. 23876], Kottelat 2013:392 [ref. 32989], Zhang et al. 2016:199 [ref. 34477] (also treated as synonym of Eleotris oxycephala Temminck & Schlegel 1845), Mennesson et al. 2021:480 [ref. 38793], Parenti 2021:37 [ref. 38603]). Current status: Synonym of Eleotris melanosoma Bleeker 1853. Eleotridae: Eleotrinae. Habitat: freshwater, brackish, marine.