You can find parrotfish in tropical reef environments, where they use their external teeth – which look like a beak – to break algae off rocks, coral and other hardened substrate. This ability allows them to carve out a living in places where many other species cannot survive.
Another fun fact? Parrotfish defecate sand. As it turns out, many of the sand grains found on white-sand beaches are actually parrotfish poop.
Parrotfish are found in the Indian and Pacific oceans; the Seychelles islands off East Africa boast a particularly sizable population.