Parrot Fish come in gorgeous colors, with their scales sparkling in the underwater sunlight. Pictured here is the Rainbow Parrot Fish. Named for their parrot-like mouths, they feed on a wide variety of reef organisms. And with their teeth they grind up coral rock that the fish ingested during feeding. After they digest they excrete the rock as sand helping to create small islands and the sandy beaches of the Belize. One parrot fish can produce 90 kg of sand each year, and they grow up to 20 inches long.