The Parrot fish alimentation consist primarily of algae extracted from chunks of coral ripped from a reef. The coral is pulverized with grinding teeth in the fishes’ throats in order to get to the algae-filled polyps inside. Much of the sand in the parrot fish's range is actually the ground-up, undigested coral they excrete.
Pparrot fish are abundant in and around the tropical reefs of all the world’s oceans. There are about 80 identified species, ranging in size from less than 1 to 4 feet (30 to 120 centimeters) in length.
When young and small, the parrot fish is hunted by other larger fish. As the parrot fish grows it gains bigger and meaner predators: the black tip reef shark, the white tip reef shark, large carnivorous fish, octopuses, other sharks that may be wondering around by the reefs.