Mexichromis porterae from Laguna Beach, California

August 2, 2006
From: Kevin Lee

Hi Doc,

Here's a few fotos of Mexichromis porterae. As I was trying to photograph the nud, there was quite a bit of surge and it lifted up the mantle, revealing the underside of the critter and its oral tentacles (I'm guessing).

Locality: Deadman's Reef, Crescent Bay, Laguna Beach, 25fsw, California, USA, Eastern Pacific, 04 July 2006, rocky reef. Length: 2cm. Photographer: Kevin Lee.

Best wishes,

Lee, K., 2006 (Aug 2) Mexichromis porterae from Laguna Beach, California. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Kevin,
Yes the flattened triangular shaped flaps are its oral tentacles. Most chromodorids have more tapering cylindrical tentacles, so this is an interesting observation. I don't think its a character of the genus Mexichromis however, because species I am familiar with from the Indo-West Pacific don't have this shaped oral tentacles. I guess its another thing to add to the 'to check up' list.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Aug 2). Comment on Mexichromis porterae from Laguna Beach, California by Kevin Lee. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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