Goniobranchus lekker    (Gosliner, 1994)
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This species has been observed on Reunion, Mauritius and Madagascar Islands

Order : Nudibranchia
Suborder : Euctenidiacea
Superfamily : Doridoidea
Family : Chromodorididae
Distribution : Western Indian Ocean - Natal (South Africa), Madagascar, Reunion Is, Seychelles Is.
Maximal size : 25 mm
Abundance : Frequently on the rocky coast, seldom on the fore reef zone

Species characteristics :

An irregular opaque white band at the mantle edge, then an orange band with a row of reddish spots and then a purplish white band on which there are dark purple spots

Fine opaque white spots are observed on the dorsal surface of mantle (notum).

chromodoris lekker P.Bidgrain
Showing species characteristics...
Photo Philibert Bidgrain
Réunion, Etang Salé les Bains, less 1 m,17 octobre 2005, size : 20 mm

See more about : Sightening and mating periods

Remarks :

Identification confirmed by Bill Rudman
    Synonymous : (according Worms)
          - Chromodoris lekker, Gosliner, 1994

Bibliographic data :

This species closely resembles Goniobranchus decorus, but differs in possessing opaque white spots on the dorsal surface of mantle (notum). G. decorus possesses a typical colour form with white Y-shaped pattern on the notum or purple spots in centre of back.

References :

Bill Rudman Seaslug site : Sea Slug Forum : Chromodoris lekker
   Nudipixel Chromodoris lekker

Publications :

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. (1981) Nudibranchs of Southern Africa. Chromodoris sp 4. , p.77.
    Gosliner, T.M. (1994) New species of Chromodoris and Noumea (Nudibranchia: Chromodorididae) from the western Indian Ocean and southern Africa. Proceedings of the Californian Academy of Sciences, 48(12) : 239-252.

Other photos of Goniobranchus lekker :

Discodoris boholiensis E.Eby

Olivier Fournajoux

Madagascar, Baie d'Antongil, 10 m, 5 February 2018, size : 20 mm


Philibert Bidgrain

Réunion, Etang salé on a rocky coast, 12 February 2006 size 15-20 mm

The foot of this species is entirely white

Rhinophores structure : The stalk of the lamellate rhinophore is translucent and the club is white.

chromodoris lekker M.Jay


Philibert Bidgrain

Réunion, Etang salé on a rocky coast, 19 August 2006 size 20-25 mm

The fine opaque white spots observed on the mantle dorsal surface, corresponded to the tip of some little opaque white tubercles

size : 4-5 mm, 12 February 2006

size : 8-9 mm, 10 December 2005

Philibert Bidgrain

Evolution of the colouring pattern during growth

All these specimens were observed at Etang salé les bains on a rocky coast.



size : 10-15 mm for the small one,
29 November 2006 Réunion



Seb Vasqsuez

Réunion, Etang salé on a rocky coast, less i m, 20 March 2015

During the night

With its pale yellow spawn...


chromodoris lekker M.Jay

 More photos from Indian Ocean

Reunion, Goniobranchus lekker, at Saint Paul, by Maurice Jay

Reunion, two Goniobranchus lekker, at Saint Paul, by Sully Bachel 

Mauritius, Goniobranchus lekker, at Mahebourg, by Yann von Arnim