Occurs in Mae Nam Ping basin at Chiang Mai Province, Salween basin at Mae Hong Son Province, Mekong basin at Chiang Mai and Chiang Rai Provinces (Ref. 39226), Chao Phraya and Maeklong basins (Ref. 26336). In the Mekong basin, known from Chiang Mai Province in Pong Nam Ron, in Nam Mae Mao at Ban Huai Phak Phai, in Nam Mae Chai and in Mae Nam Kok at Thaton; and from Chiang Rai Province in Nam Mae Lao, in Pang Meton, in Nam Tok Khun Koan and in Nam Mae Lao (Ref. 39226); also from Khon Kaen, Sakon Nakhon and Kanchanaburi (Ref. 37773). Also Ref. 1632, 12041, 26580, 43281.