Known from the Mekong River. A migratory species occurring at the Khoné Falls (Ref. 37772). 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). Inedible, eating this fish reportedly induces nausea & vomiting. The poison comes from Hydnocarpus fruits (mak gabao & mak ngooan) on which it feeds. Dorsal musculature eaten as lap (raw meat) marinated in vinegar & pepper (Ref. 9497). According to Ban Hang Khone fishermen, this species enters the flooded forest in July-September, feeds heavily on fallen fruit and attains a maximum weight of about 10 kg (Ref. 9497). Also Ref. 4792, 30857, 36654, 56905.