scan of fish skull (IMAGE) Rice University Caption Scan of a knothead parrotfish (Chlorurus oedema) skull. Credit Image courtesy of Evans Lab/Rice University Usage Restrictions Must credit Evans Lab/Rice University. 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.