Fang Blenny (IMAGE) University of Queensland Caption The fanged fish's heroin-like venom could lead to pain treatments. Credit Image courtesy Associate Professor Bryan Fry Usage Restrictions For use in association with this article 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.