More on Mexichromis porterae

July 29, 2005
From: Clinton Bauder

Hi Bill,
Since this species seems to be topical, here are a couple of images of Mexichromis porterae on a couple of different sponges from a deep dive in Carmel a few years back. Size was about 25 mm if I remember right. Depth maybe 50 meters. The larger image was taken by my friend Sami Laine, the smaller one is mine (from video).

Locality: Outer Pinnacles, Carmel, California, USA. Depth: 50 meters. Length: 25 mm.18 Jan 2003. Vertical wall. Photographer: Sami Laine, Clinton Bauder


Bauder, C., 2005 (Jul 29) More on Mexichromis porterae . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Clinton,
It's good when a topic stimulates some more messages. Your animal seems to be on a mixed assemblage of sponges, cnidarians and ascidians. Mexichromis porterae has been reported to feed on a species of Dysidea, but as luck would have it I can't see anything looking like Dysidea in your photos. Some chromodorids seem to always be found with their food while others are seldom seen near anything identifiable.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jul 29). Comment on More on Mexichromis porterae by Clinton Bauder. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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