Glossodoris sibogae from Fiji

January 16, 2002
From: Ken Tucker

I'm having trouble identifying this nudibranch, shot in Fiji while diving there this March. It was between 1.0" to 1.5" and found in Bligh Water, smack in the middle of the Vatu-i-ra Passage, which runs between Vanua Levu and Viti Levu.
Perhaps you can help.

Thanks much,
Ken Tucker

Tucker, K., 2002 (Jan 16) Glossodoris sibogae from Fiji. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Ken,
I am pretty sure this is Glossodoris sibogae. It looks very much like forms of G. atromarginata but the distinct white band around the mantle edge and the shape of the rhinophore clubs are indicative of G. sibogae. The only real way to be sure is to lookat the radular teeth which are proportionally much smaller than in G. atromarginata.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (Jan 16). Comment on Glossodoris sibogae from Fiji by Ken Tucker. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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