CoreoleuciscusCoreoleuciscus is a genus of freshwater ray-finned fish belonging to the family Gobionidae, the gudgeons. The fishes in this genus are endemic to rivers of the Korean peninsula.SpeciesThere are currently 2 recognized species in this genus:Coreoleuciscus aeruginos H. Y. Song & I. C. Bang, 2015 Coreoleuciscus splendidus T. Mori, 1935