October 11, 1999
From: Anne Dupont
I have photographed this nudibranch on our reefs here in Florida over the years.
They are usually found on top of the reef in about 60 feet of water in the algae. The book that I have calls it a purple-crowned sea goddess, Chromodoris kempfi.
I have two questions, (1) Can you identify it and (2) is this mating behavior?
I'm sending you another photo showing 4 of the critters together. I have seen them alone, two together, three together and four together.
Thank you for your time.
firstname.lastname@example.orgDupont, A., 1999 (Oct 11) Chromodoris kempfi from Florida. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/1415
Your animals certainly fit the original description of Chromodoris kempfi, which was originally described from northern Brazil. It has been subsequently been recorded from the Caribbean coast of Panama and Florida. I very much doubt that it will remain in the genus Chromodoris when its anatomy is fully investigated as Marcus's original description described multicuspid jaw platelets and a very small radular ribbon which is quite unlike Chromodoris. It is possibly a species of Mexichromis, of which there are a number of species on the east Pacific coast of central America.
The 'trailing' behaviour may be a precursor to mating, but as their genital opening is on the right side they need to be arranged alongside each other, right-side to right-side, for mating to occur. The trailing observation is very interesting because it has previously been observed only in species of Risbecia and one Hypselodoris, Hypselodoris paulinae. If you Search the Forum for trailing you will get a list of messages and photos on the subject.
Re: Mexichromis kempfi from Little Cayman, British West Indies
From: Vinicius Padula, November 27, 2008
Mexichromis kempfi from Little Cayman, BWI
From: Deborah Chambers, November 26, 2008
Re: Mexichromis kempfi from Brazil
From: Vinicius Padula, January 12, 2007
Mexichromis kempfi from Brazil
From: Armando de Luca Junior, January 10, 2007
Mexichromis kempfi from Cozumel, Mexico
From: Charles Hopf, October 27, 2006
Mexichromis kempfi from Cozumel
From: James Lyle, August 22, 2006
Re: Nudibranch in Little Cayman?
From: Matan Ninio, January 17, 2006
Nudibranch in Little Cayman?
From: Larissa Roorda, January 16, 2006
Mexichromus kempfi from Bonaire
From: Les Wilk, December 15, 2005
Unknown chromodorid from Brazil
From: Armando de Luca Junior, March 5, 2005
Chromodoris kempfi - 'trailing' behaviour
From: Andreas Ahrens, March 6, 2003
Correct genus for Chromodoris kempfi
From: Elianny Dominguez Tejo, March 19, 2002
Chromodoris kempfi from Colombia
From: Phanor Montoya, October 20, 2000
Chromodoris kempfi? from Colombia's Caribbean coast
From: P. Montoya, March 31, 2000