Stoplight Parrotfish

Photo: Martin Reith · CC BY-NC

Stoplight parrotfish are the primary bioerosion agent on the Les Arcadins reef, their parrot-like beaks removing algae and dead coral tissue and producing carbonate sand in the process. Large supermale individuals in vivid green and red colouration hold feeding territories across the reef crest and their biting activity is audible to divers within several metres.