Known from the Mekong basin. Found in the 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). Occurs in deep slow reaches during dry season in the Mekong basin at Muang Khong (Ref. 37769). Undertakes an upstream non-reproductive migration in December-March at Hat Village, Muang Khong (Ref. 37769 ). Observed to undergo migration and fished heavily at the fishing village of Ban Wernsonkhram on Don Hat (Hat Island) above the Lee Pee Waterfalls (Ref. 10431). Museum: Mekong at Ban Hang Khone, just below Khone falls, CAS 94886, 95436 (Ref. 5515). Also Ref. 30857, 36654, 37767, 56905.