Found over rocky substrates and sandy area with algal growth. Gregarious, sometimes forming sizeable schools. Young mainly carnivorous on crustaceans, adults almost exclusively herbivorous (Ref. 4781), feed on seaweeds (Ref. 36731). Protandric hermaphrodite (Ref. 4781). Tasty when fresh, but easily softens and is not much esteemed (Ref. 3198).