Colpodaspis thompsoni from the Red Sea

October 24, 2005
From: Oren Lederman

Hi Bill,

This is the second time I have seen this kind of opisthobranch (first time was on a night dive), this time with a better camera so it's possible to see the small details.

Locality: The "Princess" beach, Eilat Bay, Israel. Red Sea. Depth: ~12 meters. Length: 0.5 cm. 10 October 2005. Coral head. Photographer: Oren Lederman

Can you identify it ?

Lederman, O., 2005 (Oct 24) Colpodaspis thompsoni from the Red Sea. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Oren,
This is Colpodaspis thompsoni. It has fragile internal shell and is considered to be related to the Diaphanidae. However as we don't really know what the Diaphanidae are related to they still are a rather mysterious group. If I had money to give away, I think I would offer a prize to the person who discovers what these animals feed on.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Oct 24). Comment on Colpodaspis thompsoni from the Red Sea by Oren Lederman. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Related messages

  1. Re: Colpodaspis thompsoni from the Red Sea
    From: Oren Lederman, August 19, 2008
  2. Colpodaspis thompsoni mating
    From: Ayumi Murakami, July 15, 2008
  3. Nudibranch or cowrie?
    From: James A. Loyola, November 1, 2007
  4. Colpodaspis thompsoni from Reunion Island
    From: Philibert Bidgrain, August 21, 2007
  5. Colpodaspis thompsoni from the Solomon Ids
    From: Donald Brown, August 15, 2007
  6. Colpodaspis thompsoni laying eggs
    From: Ayumi Murakami, November 3, 2006
  7. Colpodaspis thompsoni in southern Queensland
    From: Gary Cobb, July 20, 2006
  8. Colpodaspis thompsoni from Christmas Island
    From: W.B. Rudman, May 7, 2002
  9. Colpodaspis thompsoni from NE Sulawesi
    From: Jim Anderson, August 12, 2001
  10. Colpodaspis thompsoni from Kerama Id
    From: Atsushi Ono, February 4, 2000

Show factsheet and all related messages