Ryukyupercis is a monotypic genus of percomorph fish from the family Pinguipedidae, the sandperches. The only species in the genus, Ryukyupercis gushikeni, the rosy grubfish, is found in the Indo-Pacific from Japan to north western Australia. The generic name is a compound of Ryukyu after the Ryukyu Islands where the type specimen was collected and "percis" a suffix for many of the genera in the Pinguipediae, the specific name honours Mr Soko Gushiken, a who gave the describer of the species, Tetsuo Yoshino, many specimens.

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