Guppies (2 of 2) (IMAGE) University of Exeter Caption In the experiment, guppies were kept in pools and some were exposed to model predators. Credit University of Exeter Usage Restrictions This image may only be used in reports of this research paper. 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.