Zebrafish (image) NASA/Johnson Space Center Share Print E-Mail Caption JAXA's Zebrafish Muscle study will observe the effects of microgravity aboard the International Space Station on the zebrafish, pictured here. Credit Japanese Aerospace Exploration Agency Usage Restrictions For use with this news story only. Share Print E-Mail 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.