Male Amphipod with Big Claw (IMAGE) University of Adelaide Caption Male amphipod (Cymadusa pemptos) shows the bigger, more attractive, claw of the male. Credit Credit: Katherine Heldt Usage Restrictions For use with story 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.