kachekensis, Pseudogobio Oshima [M.] 1926:13 [Annotationes Zoologicae Japonenses v. 11 (no. 1); ref. 3314] Kachek River, about 40 miles above Kachek, Hainan Island, China. Holotype (unique): whereabouts unknown. •Synonym of Microphysogobio brevirostris (Günther 1868), but a valid subspecies -- (Bănărescu & Nalbant 1966:195 [ref. 20622]). •Valid as Abbottina kachekensis (Oshima 1926) -- (Yu in Kuang et al. 1986:102 [ref. 26639]). •Valid as Microphysogobio kachekensis (Oshima 1926) -- (Mai 1978:196 [ref. 13511], Jin in Pan et al. 1991:216 [ref. 23876], Zhu 1995:83 [ref. 25213], Yue in Chen et al. 1998:361 [ref. 23878], Kottelat 2001:30 [ref. 25482], Zhao & Zhang 2001:591 [ref. 25676], Ying et al. 2011:66 [ref. 31333], Jiang et al. 2012:212 [ref. 32321], Kottelat 2013:124 [ref. 32989], Zhang et al. 2016:74 [ref. 34477], Huang et al. 2016:207 [ref. 34842], Huang et al. 2017:table 1 [ref. 35245], Huang et al. 2018:[20] [ref. 36342], Sun et al. 2024:182 [ref. 41617] as kechekensis). Current status: Valid as Microphysogobio kachekensis (Oshima 1926). Gobionidae. Distribution: Southeast Asia: Hainan, Guangxi and Guangdong Provinces, and Hainan Island, southern China. Habitat: freshwater, brackish.