Colorful parrotfish are abundant in shallow, tropical waters worldwide. Using beak-like front teeth, they feed by scraping algae from reefs. Small pieces of coral are consumed along with the algae and are pulverized by pharyngeal teeth in their throats. Undigested coral is then excreted as sand. Protecting parrotfish is a way of saving coral reefs from being over-grown with seaweed.
by John Scarlett, via
Source: underthevastblueseas
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