Re: Ceratosoma flavicostatum feeding

July 5, 2007
From: Leanne & David Atkinson

Concerning message #19277:

Hi Bill,
This is a beautiful nudibranch and the name change to Ceratosoma flavicostata doesn't seem to keep that reference to it being magnificent. Does flavicostata have a meaning or is it named after someone? This one doesn't seem to be eating but you sometimes see more in a picture than we do. You don't have one yet from the Coffs Harbour area so thought we would add this one. We found it on the roof of a ledge.

Locality: E Gutters, North West Solitary Island, Solitary Island Marine Park, 10 metres, Northern New South Wales, Australia, Pacific, 15 September 2000, on the roof of a ledge in a shallow rocky reef strong surge area with lots of filter feeder growth. Length: approximately 90 mm. Photographer: Leanne & David Atkinson.

Best wishes,
Leanne & David Atkinson

Atkinson, L. & D., 2007 (Jul 5) Re: Ceratosoma flavicostatum feeding. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Leanne & David,
Sorry I can't see anything food-related either.

Concerning the name. I'm sorry to announce a further confusion. It should be flavicostatum. I've explained why in a separate message [##20101]. Concerning the name's meaning, the flavi - comes from Latin for yellow and costatum from latin for a rib. So basically it refers to the yellow rib-like ridges down each side of the mantle.  I agree it is not as upbeat as 'magnificum'

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Jul 5). Comment on Re: Ceratosoma flavicostatum feeding by Leanne & David Atkinson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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