Parrotfishes are a group of about 90 fish species regarded as a family, or a subfamily of the wrasses. With about 95 species, this group's largest species richness is in the Indo-Pacific. They are found in coral reefs, rocky coasts, and seagrass beds, and can play a significant role in bioerosion.
Parrotfish (Scaridae) are effective algae eaters for the reef, but some species will also live off rock corals. Many of these fish will grow too big for most domestic aquaria, although there are some exceptions. Parrotfish will generally eat a lot and often, which must be taken into account. It is an advantage to have lots of algae in the aquarium which they can graze on. These fish will sleep in a mucus cocoon between stones.