Occurs in the Mekong and the middle Xe Bangfai (Ref. 27732). Found in Ban Hang Khone at Don Khone, 3 km below the fall line of the great waterfalls of the Mekong basin at Lee Pee (Ref. 9497). Migrates with pa soi in January-February and again in June-July; according to Ban Hang Khone fishermen this species enters the flooded forest in July-October and feeds on kai hin (filamentous algae) (Ref. 9497). Also undertakes upstream and downstream migrations during the wet season in June-July through Hoo Som Yai at the Great Fault Line on the Mekong River, Champassack Province (Ref. 37771). Reported to migrate upstream during the dry season in December/March in Southern Laos (Ref. 37769). Also Ref. 4792, 30857, 37767, 43281, 50526, 56905.