Parrotfish: unsung heroes of Caribbean reefs?

IOL: "The delicate balance of the Caribbean's coral reefs is in jeopardy as more parrotfish end up on dinner plates, international scientists said on Wednesday. The colourful grazing fish, named for their parrot-like beaks which are used to scrape up algae, play a vital role in stopping seaweed from smothering coral. But their numbers are now being threatened by over-fishing."