<i>Squalius aradensis</i> (IMAGE) Pensoft Publishers Caption This picture shows Squalius aradensis, one of the species featured in the study. 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.