Known from the Mekong River (Ref. 43281). A migratory species that is found around Pak Beng to the Khone Falls (Ref. 37772). 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). Undertakes upstream migration during the wet season in May-June through Hoo Som Yai at the Great Fault Line on the Mekong River, Champassack Province (Ref. 37771). Considered one of the important pangasid species in the Khone Falls "lee" (wing) trap fsihery during May to July each year (Ref. 37770). Also Ref. 4792, 30857, 37767, 56905.