Mexichromis tura is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae.

[2][3] This species is recorded from the Gulf of California to Panama and the Pacific Ocean coast of Mexico.

[5][6] The central part of the mantle in Mexichromis tura is dark blue with irregular yellow spots and is surrounded by a series of concentric bands.

Within the edge of the dark blue area there is a row of white spots which may merge into a line, then a broad pale blue area, a narrower black band and at the edge of the mantle a bright yellow line.

This is a small animal, growing to 10 mm (0.39 in) in length.