cliffordpopei, Gobius Nichols [J. T.] 1925:5 [American Museum Novitates No. 185; ref. 3180] Tungting Lake, Hunan Island, China. Holotype (unique): AMNH 8438. Non-types: FMNH 14697-700 (4). Type catalog: Koumans 1940:122 [ref. 2676], Ibarra & Stewart 1987:42 [ref. 12367]. •Valid as Ctenogobius cliffordpopei (Nichols 1925) -- (Zheng 1989:353 [ref. 21202], Deng in Ding 1994:528 [ref. 21531], Yang & Chen 1995:115 [ref. 23555], Zhu 1995:183 [ref. 25213], Cheng & Zhou 1997:382 [ref. 26385]). •In Rhinogobius -- (Chen et al. 1999:45 [ref. 24092]). •Valid as Rhinogobius cliffordpopei (Nichols 1925) -- (Chen & Kottelat 2000:81 [ref. 24446], Tang et al. 2001:15 [ref. 25373], Kottelat 2013:424 [ref. 32989], Zhang et al. 2016:202 [ref. 34477], Takahashi & Okazaki 2017:[3] [ref. 35171], Suzuki et al. 2017:80 [ref. 35202], Xia et al. 2018:560 [ref. 35887], Li et al. 2018:5 [ref. 35989], Zhang et al. 2019:530 [ref. 36699], Dyldin et al. 2020:90 [ref. 37569], Fu et al. 2021:9573 [ref. 39347], Guo 2021:867 [ref. 38618]). Current status: Valid as Rhinogobius cliffordpopei (Nichols 1925). Gobiidae: Gobionellinae. Distribution: East Asia: Hunan and Yangtze River basin (China); Amur River basin (Russia). Habitat: freshwater.