Both old and young fish sustain fisheries (IMAGE) ARC Centre of Excellence for Coral Reef Studies Caption There are four species of coral grouper found commonly on the Great Barrier Reef. The bar-cheek coral grouper (Plectropomus maculatus) is distinguished by elongated dot patterns. Credit Phil Woodhead, Wet Image Underwater Photography. Usage Restrictions Use is with credit to the photographer. Please note single use with this story only, not for any other story. No archival permissions are granted. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.