This is a closeup portrait of a parrotfish. Parrotfishes are among the most colourful fishes of the reef. They munch pieces of coral -eating algae on them in the process- and poop fine sand. Its fused teeth shaped like a beak -hence its name- allow it to scrape off pieces of coral and other food, and inner pharyngeal teeth that crush the food once it’s in its mouth. Its teeth are made of fluorapatite, among the hardest biominerals in the world.