duospilus, Ctenogobius Herre [A. W. C. T.] 1935:286 [Hong Kong Naturalist v. 6 (nos 3-4); ref. 13700] Brook in hills of the New Territory, Hong Kong. Holotype: CAS-SU 30955. Paratypes: CAS-SU 16965 (1). Type catalog: Koumans 1940:149 [ref. 2676], Böhlke 1953:110 [ref. 12291]. •Valid as Ctenogobius duospilus Herre 1935 -- (Wu in Pan et al. 1991:482 [ref. 23876], Zhu 1995:182 [ref. 25213]). •Valid as Zhuquella duospilus (Herre 1935) -- (Endruweit 2024:173 [ref. 41040]). •Valid as Rhinogobius duospilus (Herre 1935) -- (Kottelat 2001:61 [ref. 25482], Chen & Kottelat 2005:1407 [ref. 28141], Huang & Chen 2007:102 [ref. 29017], Chen et al. 2008:342 [ref. 29895], Li & Zhong 2009:330 [ref. 30205], Kottelat 2013:424 [ref. 32989], Huang et al. 2016:[9] [ref. 34339], Zhang et al. 2016:202 [ref. 34477], Takahashi & Okazaki 2017:[2] [ref. 35171], Suzuki et al. 2017:81 [ref. 35202], Li et al. 2018:5 [ref. 35989], Endruweit 2018:307 [ref. 36165], Parenti 2021:356 [ref. 38603], Li et al. 2024:192 [ref. 41433]). Current status: Valid as Rhinogobius duospilus (Herre 1935). Oxudercidae: Gobionellinae. Distribution: East Asia: Hong Kong, China. Habitat: freshwater, brackish.