Glass knifefish 2 (IMAGE) Johns Hopkins University Caption Using tools from robotics and neuroscience research, Johns Hopkins scientists Noah Cowan (in foreground) and Eric Fortune used the South American glass knife fish to study how the brain guides complex movements. Credit Will Kirk/JHU 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.