Occurs in the Mekong tributary, the lower Xe Bangfai basin (Ref. 27732). Found in the Khone Falls (Ref. 37772). Collected from Tha Ngon in the Mekong basin (Ref. 4792) and from Ban Hang Khone, a village on an island in the middle of the mainstream Mekong River just below the Great Khone Waterfalls in Khong District, Champasak Province (Ref. 37767). Enters flooded forest in Ban Hang Khone, Don Khone, just below the great waterfalls at Lee Pee (Ref. 9497). Undertakes upstream migration during the wet season in May-July through Hoo Som Yai at the Great Fault Line on the Mekong River, Champassack Province (Ref. 37771). Also Ref. 9497, 30857, 37771, 43281, 44002, 56905.