Coral Reef Fish (IMAGE) University of California - Santa Cruz Caption In a wide range of coral reef fish species, a sequence of well-defined decision rules generate evasion behavior to escape a perceived threat. Credit Stella Hein 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.