This species has been observed on Reunion Island
Order : Nudibranchia
Suborder : Euctenidiacea
Superfamily : Doridoidea
Family : Chromodorididae
Tropical Indo west Pacific.
Maximal size : 60 mm
Abundance : From time to time on the fore reef zone
Species characteristics :
This sea slug is easely distinguished by the magnificent, marginal bright blue (white in our specimens) blocks of color which appear in series separated by black area of pigment.
The yellowish orange dorsal surface of the notum is absent in many areas which circles or irregular patches of blue (white in our specimens) to lavender are visible. These patches are different sizes and shapes and
the largest of which are raised on low pustules.
The rhinophores are creamish with a purple streak up both anterior and posterior axes.
The gills are translucent white with dark blue, black or maroon streaks on the outer and inner faces of the gills
|Showing species characteristics...
Photo Sophie Darnis
Reunion, "Tour de Boucan" at St Paul, 17 m, 8 July 2006, size 35 mm
See more about : Sightening and mating periods
Identification confirmed by Bill Rudman
Synonymous : (according Worms)
- Chromodoris roboi, Gosliner & Behrens, 1998
Bibliographic data :
Bill Rudman Sea slug site : Sea Slug Forum : Chromodoris roboi
Nudipixel Chromodoris roboi
Johnson R.F. & Gosliner T.M. (2012) Traditional taxonomic groupings mask evolutionary history: A molecular phylogeny and new classification of the chromodorid nudibranchs. PLoS ONE 7(4): e33479
Gosliner, T.M. & Behrens, D.W. (1998) Five new species of Chromodoris (Mollusca: Nudibranchia: Chromodorididae) from the tropical Indo-Pacific Ocean. Proceedings of the California Academy of Sciences 50(5): 139-165
Other photos of Goniobranchus roboi :
"Tour de Boucan" at St Paul, 17 m, 8 July 2006, size 35 mm
1 : The black color sometimes extends into the outer edges of the blue ( or white) area, bisecting them to varying degree.
2 : The blue (or white) coloration often extends inward from the black marginal band interrupting the yellow-orange pigment which covers most of the notum of the animal.
3 : Dorsal patches are different sizes and shapes and the largest of which are raised on low pustules.
4 : The rhinophores are creamish with a purple streak up both anterior and posterior axes.
"La Barge" at St Paul, 26 m, 3 February 2007, size : 30-35 mm.
A very colored photo of this seaslug crawling on a anchor's wreck.
May be a juvenile form ?
More photos from Indian Ocean
Reunion, Goniobranchus roboi, by Maurice Jay
Reunion, Goniobranchus roboi, at Sainte Rose, by Sophie Albanhac
Reunion, Goniobranchus roboi, at Saint Leu, by