isostigma, Schistura Kottelat [M.] 1998:76, Figs. 114-115 [Ichthyological Exploration of Freshwaters v. 9 (no. 1); ref. 23436] Nam Leuk, about 1 kilometer downstream of confluence with Nam Ngang, Laos, 18°22'03"N, 103°06'03"E. Holotype: ZRC 41797. Paratypes: CMK 12392 (1); 13275 (6); DFV uncat. (2); NRM 36709 (2); ZRC 41798 (2). •Valid as Schistura isostigma Kottelat 1998 -- (Kottelat 2001:109 [ref. 25780], Ou et al. 2011:199 [ref. 31692], Chen & Neely 2012:226 [ref. 32332], Kottelat 2012:110 [ref. 32367], Bohlen & Šlechtová 2013:89, 91 [ref. 32798], Kottelat 2013:207 [ref. 32989], Kottelat 2015:44 [ref. 33971], Kottelat 2017:53 [ref. 35502], Kottelat 2017:705 [ref. 35677], Taki et al. 2021:222 [ref. 39830]). •Possibly in Mustura -- (Kottelat 2018:292 [ref. 36206], Choudhury et al. 2021:8 [ref. 38288]). Current status: Valid as Schistura isostigma Kottelat 1998. Nemacheilidae. Distribution: Southeast Asia: Nam Theun River drainage, Mekong River basin, central Laos. Habitat: freshwater.