Although they’re an uncommon and near-threatened species, rainbow parrotfish (Perciformes: Scaridae: Scarus guacamaia) have a relatively wide distribution. These large, colorful fish can be found all the way from Bermuda to Argentina in the western Atlantic. Adults primarily inhabit coral reefs and use their beak-like mouths to scrape algae and polyps from rocks and coral. Young fish are typically more at home among the safety of mangroves.
These fish can weigh up to about 44 pounds (20 kg) and grow to nearly four feet (120 cm), making them the largest species in the parrotfish family.