Goniobranchus obsoletus

Goniobranchus obsoletus is a species of colourful sea slug, a dorid nudibranch, a marine gastropod mollusc in the family Chromodorididae.^[2][3]

Goniobranchus obsoletus
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Nudibranchia
Family:	Chromodorididae
Genus:	Goniobranchus
Species:	G. obsoletus
Binomial name
Goniobranchus obsoletus (Rüppell & Leuckart, 1831)[1]
Synonyms[2]
Casella obsoleta (Rüppell & Leuckart, 1831) Chromodoris obsoleta (Rüppell & Leuckart, 1831) Doris obsoleta Rüppell & Leuckart, 1831 (basionym)

Distribution

This species was described from the Red Sea. It has also been reported from the Persian Gulf.^[4]

Description

Goniobranchus obsoletus is a chromodorid nudibranch with a mostly white mantle and an orange mantle edge. There is an irregular band of blue-black just inside the orange margin and the mantle is rugose with an orange-brown reticulation between the raised pustules. The rhinophores and gills are translucent brown with white markings.^[4][5][6][7]