Parrot Fish (IMAGE) Oregon State University Caption Research has found that in some cases, the type of algae control done by parrot fish and other species can pose a danger to unhealthy corals, instead of the benefit it usually offers. Credit (Photo by Cory Fuchs, courtesy of Oregon State University) Usage Restrictions None 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.