Rubramoena amoena is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.
This species was described from Torbay, Devon, England. It has been reported from the NE Atlantic from Orkney south to Portugal and in the Mediterranean Sea.
The typical adult size of this species is 5âÂÂ12 mm.
Rubramoena amoena feeds on hydroids of the genus Halecium.