Goniobranchus aureomarginatus is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.Bouchet, P. (2012). Goniobranchus aureomarginatus. Accessed through: World Register of Marine Species on 2012-05-01 Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. Classification and nomenclator of gastropod families. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . ISSN 0076-2997. 397 pp.
Distribution This species was described from Auckland harbour and Waiwera, New Zealand. It is apparently a New Zealand endemic.
Description This chromodorid nudibranch has a white mantle which is edged with yellow. The rhinophores and gills are translucent white with some opaque white pigment on the gill rachis and the rhinophore lamellae.Debelius, H. & Kuiter, R.H. (2007) Nudibranchs of the world. ConchBooks, Frankfurt, 360 pp. page(s): 161
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