Click the thumbnail photos to enhance!
It is Chromodoris sp. 22 in IPN at page 229:
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs. Sea Challengers Natural History Books.
Gig Harbor, Washington. 426pp.
It was posted on 27 Dec. 2010 at these websites as Chromodoris sp. B Genus: Alder & Hancock, 1855,
then changed into Chromodoris sp. 02 Genus: Alder & Hancock, 1855,
for some genera, such as Trinchesia was the alphabet almost through. I had to change the distinguishing alphabetic character into a number. I have chosen 2-digit numbers, even though '01' looks a little bit stupid, and now is only the genus italic written.
I follow the recent article (published: 10 April 2012)
Rebecca Fay Johnson & Terrence M. Gosliner. 2012.
Traditional Taxonomic Groupings Mask Evolutionary History:
A Molecular Phylogeny and New Classification of the Chromodorid Nudibranchs. online at
and move Chromodoris sp. 02 to the reerected ("rescued from synonymy") genus Goniobranchus Pease, 1866, on which Rebecca and Terry state: "This clade includes all of the Indo-Pacific species of Chromodoris that are not part of the black-lined, planar egg mass clade, except Chromodoris alternata and Chromodoris ambiguus."