Many of the species are herbivorous, although while feeding they may ingest other small marine animals. Similar to the wrasses, they use their pectoral fins to swim and tail to gain speed. Parrotfish plays an important role in keeping the general health of coral reef ecosystem in balance. 75% of ingested material are coral rocks which then being secreted as sand that made beaches!
As pelagic spawners, they release many tiny eggs which become part of planktons then settled into coral until hatching. For majority of the species, adult size range from 30 - 50cm, although the Green Humphead can reach up to 1.3m! The species of Scaridae can be found throughout Indo-Pacific seas where they live in coral reefs, rocky coastal and seagrass bed.