Zebrafish (IMAGE) University of Zurich Caption In the study the researchers used zebrafish as a novel testing system for psychoactive substances. Credit © National Institute of Genetics, CC BY 4.0 Usage Restrictions Only with credit 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.