Any species of colorful, oval-shaped, deep-bodied and strongly compressed spiny-rayed fishes in the family Chaetodontidae. They have small mouths with flexible, brush or comb-like teeth. They resemble the closely related angelfishes. They feed on a variety of foodstuffs from zooplankton to tiny crustaceans and mollusks, soft and hard corals, anemones, segmented worms, and other soft and encrusting invertebrates associated with coral reefs. Some species are omnivores that primarily feed on marine algae as well as animals, while others are obligate corallivores.