Mekongina erythrospila, commonly known as Pa Sa-ee is a cyprinid fish endemic to the Mekong river basin. It grows to SL.
It occurs in the Mekong river basin between Kratié and Chiang Rai. It lives in flowing water, mainly in rocky areas.
It is an important commercial fishery species, as well as food fish for local consumption. In Cambodia, it is the most important fishery species by catch weight.