mekongianus, Gobius Pellegrin [J.] & Fang [P.-W.] 1940:122, Fig. 6 [Bulletin de la Société Zoologique de France v. 65 (no. 2); ref. 3418] Ban Nam Khueng, Laos. Syntypes: MNHN 1939-0261 (3). Type catalog: Bauchot et al. 1991:36 [ref. 19958]. •Valid as Pseudorhinogobius mekongianus (Pellegrin & Fang 1940) -- (Endruweit 2024:140 [ref. 41040]). •Valid as Rhinogobius mekongianus (Pellegrin & Fang 1940) -- (Rainboth 1996:208 [ref. 22772], Kottelat 1998:109 [ref. 23436], Chen et al. 1999:20 [ref. 23908], Chen et al. 1999:50 [ref. 24092], Chen & Kottelat 2000:81 [ref. 24446], Kottelat 2001:157 [ref. 25780], Chen et al. 2008:341 [ref. 29895], Kottelat 2013:425 [ref. 32989], Huang et al. 2016:[8] [ref. 34339], Takahashi & Okazaki 2017:[2] [ref. 35171], Suzuki et al. 2017:81 [ref. 35202], Parenti 2021:360 [ref. 38603], Taki et al. 2021:440 [ref. 39830]). Current status: Valid as Rhinogobius mekongianus (Pellegrin & Fang 1940). Oxudercidae: Gobionellinae. Distribution: Southeast Asia: middle Mekong River basin (northern Thailand and Laos). Habitat: freshwater.