Altrichthys Parent Guarding Brood (IMAGE) University of California - Santa Cruz Caption Altrichthys species are unusual among coral reef fish for guarding their young, as seen in this photo of an adult Altrichthys azurelineatus with its brood. Researchers found that some adults are guarding mixed broods including young that are not their offspring. Credit Giacomo Bernardi Usage Restrictions For use only with news coverage of this research 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.