compactus, Erromyzon Kottelat [M.] 2004:307, Figs. 8-9 [Ichthyological Exploration of Freshwaters v. 15 (no. 4); ref. 27994] 4 kilometers upriver of Ba Che city, 21°16'34"N, 107°14'54"E, Ba Che River, Quang Ninh Province, Vietnam. Holotype (unique): ZRC 49636. •Valid as Erromyzon compactus Kottelat 2004 -- (Neely et al. 2007:99 [ref. 29196], Yang et at. 2012:185 [ref. 32329], Kottelat 2012:60 [ref. 32367], Kottelat 2013:191 [ref. 32989], Xiu & Yang 2017:895 [ref. 35089], Gong & Zhang 2024:312 [ref. 40928]). Current status: Valid as Erromyzon compactus Kottelat 2004. Gastromyzontidae. Distribution: Southeast Asia: northeastern Vietnam. Habitat: freshwater.