Male mosquitofish in a fish tank (IMAGE) Australian National University Caption Male mosquitofish. Photo: Dave Fanner/ANU Credit Dave Fanner/ANU Usage Restrictions Must credit: Dave Fanner/ANU License Original 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.