A Dominant Male Cichlid (IMAGE) Stanford University Caption Stanford researchers say the sounds the dominant male cichlid makes may help explain how similar-looking cichlid species avoid interbreeding. Credit Fernald Lab Usage Restrictions Image may only be used with appropriate credit. 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.