I will have to try to get a good photo of the adult version of this bi-colour parrotfish as they look absolutely nothing alike. A bit like my cute baby photos and the beast I grew in to. Parrotfish are incredibly important for a healthy reef. They are constantly grazing on fast-growing algae which can smother healthy coral- in doing so, they remove a fine top layer of coral which is digested and pooed out as fine coral sand.
This juvenile is about the size of your little finger and constantly moving about, sifting through morsels of sand and substrate. Later on it changes and grows the powerful beak allowing it to crop the algae, much like a horse crops grass close to the ground.