Goniobranchus annulatus

Goniobranchus annulatus is a species of sea slug, a very colorful dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.[1]


Goniobranchus annulatus is a large smooth pale-bodied nudibranch with many vivid yellow spots, though these may be absent in some individuals. It has one purple ring around the gills and another ring around the rhinophores. The mantle usually has a purple border. It may grow to 100mm in total length.[2] The gills are triangular in cross-section.[3]


This nudibranch occurs in the Red Sea, the Indian Ocean, from the East Coast of South Africa to Thailand and also in the Mediterranean Sea [1][3][4]


  1. ^ a b c Bouchet, P. (2012). Goniobranchus annulatus. Accessed through: World Register of Marine Species at on 2012-04-22
  2. ^ King, D. & Fraser, V. 2001. More Reef Fishes and Nudibranchs Struik, Cape Town. ISBN 1-86872-686-X
  3. ^ a b
  4. ^
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