Parrotfish are a group of marine fish which typically live in the shallow waters of tropical oceans – however some species do live in sub-tropical oceans.
They belong to the Scaridae family and there are currently around 80 identified species.
You will usually find them in coral reefs, seagrass beds and rocky coasts. They are well known to divers for a few reasons:
Their incredible coloration.
Loud crunching noises whilst they eat.
Another two reasons these fish are so integral to the ocean:
They help maintain coral reefs by eating the algae which grows all over them.
They are sand making machines (more on this shortly).
 
There are over 80 recognized species. They come in all different shapes, sizes and colors but the main characteristic which they all share is their protruding fused teeth.