Most likely to occur in Cambodian rivers that flow into the western end of the Great Lake (Ref. 12693). Recorded from O. Changni, small stream on road from Ann Long Mea to Ban Lung, Ratanakiri prov (Ref. 33488); Tonle Sap (Ref. 33813) and Mekong basin (Ref. 27732, 123185). Also Ref. 36686, 43281.