mekongensis, Oryzias Uwa [H.] & Magtoon [W.] 1986:474, Fig. 1 [Copeia 1986 (no. 2); ref. 8029] Pond at Yang Talat, Kalasin Province, Thailand, 16°24'N, 103°23'E. Holotype: USNM 268540. Paratypes: CTNRC (Cter Thai Nat. Ref. Coll.) 42.2612-2620 (9), 42.2621 (1), 42.2622 (1); NSMT-P 23233-38 (6), 23239-44 (6); USNM 268541 (3). Type catalog: Collette et al. 1992:3 [ref. 19410]. •Valid as Oryzias mekongensis Uwa & Magtoon 1986 -- (Uwa & Parenti 1988:159 [ref. 6852], Rainboth 1996:172 [ref. 22772], Roberts 1998:220 [ref. 23471], Kottelat 2001:143 [ref. 25780], Parenti 2008:573 [ref. 29902], Magtoon & Termvidchakorn 2009:51 [ref. 30242], Magtoon 2010:111 [ref. 30842], Kottelat 2013:289 [ref. 32989], Kottelat 2015:47 [ref. 33971], Taki et al. 2021:326 [ref. 39830]). Current status: Valid as Oryzias mekongensis Uwa & Magtoon 1986. Adrianichthyidae: Oryziinae. Distribution: Southeast Asia: Mekong River basin, Thailand, southern Laos and Cambodia. Habitat: freshwater.