Coastal Researcher Mario Hernandez (IMAGE) Louisiana State University Caption LSU Ph.D. student Mario Hernandez is analyzing where local fish in Tanzania fit into the ecosystem by analyzing what they eat. Credit LSU 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.