Oreoleuciscus dsapchynensis is a species of freshwater ray-finned fish belonging to the family Leuciscidae, which contains the daces, chubs, true minnows and related species. This species is endemic to Airag Lake and the Zavkhan River in Mongolia. It reaches a maximum standard length of 28 cm (11 in) and it feeds on phytoplankton, plants and invertebrates.

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