mekongensis, Brachygobius Larson [H. K.] & Vidthayanon [C.] 2000:2, Figs. 1-2 [Ichthyological Exploration of Freshwaters v. 11 (no. 1); ref. 24441] Xe Banghiang basin, Xe Champhon, between bridge at Muang Kengkok and about 4 kilometers upstream, 16°27'45"N, 105°12'38"E, Savannakhet Province, Laos. Holotype: ZRC 43853. Paratypes: CMK 4786 (3), 13558 (67); LARRI uncat. (15); MNHN 1985-797 (8); NIFI 2959 (49), 3071-72 (1, 6), 3073 (7); NTM S.14867-001 (5), S.14868-001 (7), S.14871-001 (15); ZRC 43854 (15). •Valid as Brachygobius mekongensis Larson & Vidthayanon 2000 -- (Larson 2001:52 [ref. 25522], Kottelat 2001:155 [ref. 25780], Kottelat 2013:403 [ref. 32989], Kottelat 2015:48 [ref. 33971], Parenti 2021:306 [ref. 38603], Taki et al. 2021:446 [ref. 39830]). Current status: Valid as Brachygobius mekongensis Larson & Vidthayanon 2000. Oxudercidae: Gobionellinae. Distribution: Southeast Asia: Mekong River basin (central and southern Laos, Thailand and Cambodia). Habitat: freshwater.