Occurs in the Mekong basin. Found in the lower and middle Xe Bangfai (Ref. 27732) and 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). Enters flooded forest on Don Khone, just below the great waterfalls (Ref. 9497). According to local people in Kinnak market, southern Laos the species appears in reproductive condition in June and July (Ref. 10431). Undertakes upstream migration from March to August (Ref. 37770). Known to migrate into tributaries, small streams and canals and migration commences at the onset of the rainy season or when the water starts rising (Ref. 37770). Also reported to migrate upstream during the dry season in December/March in Southern Laos (Ref. 37769). Also Ref. 4792, 7050, 30857, 36654, 37767.