A solitary species, inhabiting rocky and coral reefs. Feeds on crustaceans (primarily shrimps).
Western Central Atlantic: there are two color morphs that may be genetically different. Form 1 (brown dorsally and yellow ventrally, the brown pigment may extend farther ventrally than the blue pigment in form 2, leaving only the ventral surface yellow ) is found in Central America. Form 2 (blue or brown dorsally and yellow ventrally) is found in the Virgin Islands and the Greater Antilles.