Body elongated, with a forked tail. Varies from olive to bright reddish brown, occasionally with a purplish cast, belly pale salmon. Three light spots along the back and a bright red spot at the base of the pectoral fin.
Size up to 30 cm.
Inhabit coral reefs and hard bottom areas, down to 50 m. Observed in feeding aggregations well above the reef. Feeds mainly in midwater on zooplankton. Retreats instantly when alarmed.
Rare Florida, Bahamas and northern Caribbean, common central and southern Caribbean.