Found in the Mekong basin (Ref. 43281). Stays near the edge of the forest during the period of low water and enters the flooded forest during high water. Caught during high waters when it enters the flooded forest mainly with "jun" (trap-door traps) and also by single hooks (bet ken) baited with pa soi (Ref. 9497). Found in 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). Its numbers have declined in the Khone Falls (Ref. 37772). Reported to migrate downstream in October-November (Ref. 37770). Fish migrate in groups into smaller streams to spawn (Ref. 37770). Also Ref. 30857, 37772, 56905.