Scientists Collecting Specimens (IMAGE) Pensoft Publishers Caption This image shows the team of scientists collecting specimens for the study in Portuguese streams. Credit Maria Joao Collares-Pereira Usage Restrictions CC-BY 3.0 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.