Mexichromis mariei is a species of colourful sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.[1] [2]
Originally described from New Caledonia this species is widespread in the central Indo-Pacific Ocean.[3] Animals from Japan may represent related species.
Mexichromis mariei has a white to pale pink mantle with scattered rounded pink-purple tubercles. The original description describes red spots around the edge of the mantle but there is usually a yellow band which may be slightly broken into patches. The gills are pale pink with a purple line on the exterior rachis. The rhinophores grade from pale pink to purple at the tips.[3]