Rubramoena amoena is a species of sea slug, an aeolid nudibranch, a marine gastropod mollusc in the family Trinchesiidae.Gofas, S. (2014). Cuthona amoena. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=141617 on 2025-09-10
Distribution 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.Picton, B.E. & Morrow, C.C. (2010). Cuthona amoena [In] Encyclopedia of Marine Life of Britain and Ireland.Rudman, W.B., 2006 (May 8). Cuthona amoena (Alder & Hancock, 1845). [In] Sea Slug Forum. Australian Museum, Sydney.
Description The typical adult size of this species is 5–12 mm.Thompson, T.E. and Brown, G.H. (1984). Biology of Opisthobranch Molluscs, Volume II. The Ray Society. 229 pages 41 plates, 40 figures
Habitat Rubramoena amoena feeds on hydroids of the genus Halecium.
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