Occurs in Chao Phraya (Ref. 26580) and in Nam Mae Fang and Nam Mae Lamao, two tributaries of the Nam Mae Khok, itself a tributary of the Mekong, and in Mae Nam Ping basin (Ref. 39226). Type locality: Nam Mae Lao at km 62 and 65 along road from Chiang Mai to Chiang Rai, Chiang Rai Prov., Mekong basin, Thailand (Ref. 33021).