A Three-Spined Stickleback (IMAGE) University of Münster Caption Infection by parasites disturbs flight behaviour in shoals of fish. Credit WWU/Jörn Scharsack Usage Restrictions None 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.