Mexichromis porterae
(Cockerell, 1902)

Suborder: DORIDINA
Family: Chromodorididae


Eastern Pacific from Monterey Bay, California to Baja California, Mexico.


Both photos are from California's Channel Islands. PHOTO: Scott Johnson.

Mexichromis porterae is one of a number of blue chromodorids with yellow markings from the eastern Pacific. It is characterised by the thin white border to the mantle, a bluish white line down the dorsal midline and bright yellow line down each side of the mantle. The species it resembles most closely in colour is Chromodoris macfarlandi which has a violet background colour, a white border, and three yellow longitudinal lines. Another species, Hypselodoris californiensis, is dark blue with yellow spots. Grows to 35 mm in length (Behrens, 1991 )

  • Cockerell, T. D. A. (1902) Three new species of Chromodoris. The Nautilus, 16(2): 19-21.
Authorship details
Rudman, W.B., 1999 (January 16) Mexichromis porterae (Cockerell, 1902). [In] Sea Slug Forum. Australian Museum, Sydney. Available from

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