Mexichromis antonii is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.[2][3]
The holotype of this species was collected in 9 m (30 ft) of water at Punta Aguja (near Mulege), Baja California, Mexico (). Three paratypes were also included in the original description, from Isla San Jose, (), Los Islotes, () and Santiago Bay, near Manzanillo, Colima, (). It has been reported from the Gulf of California south to Panama.[4]
Mexichromis antonii has a light blue mantle with two bands of colour at the edge, inner black and outer yellow-orange. There is a mid-dorsal line of white which is broken into elongate spots surrounded by a pink-magenta region which stretches from the rhinophore bases to the gill. The light blue area is divided longitudinally by a faint black line. The bases of the rhinophores and gill leaves are pale magenta with the outer half black.[5] Grows to 12 mm (0.47 in) in length.[4]
Mexichromis antonii is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.
