Zebrafish (IMAGE) NASA/Johnson Space Center Caption The Zebrafish Muscle study will observe the effects of microgravity aboard the International Space Station on the zebrafish. Credit Sehara Lab Usage Restrictions For news coverage in connection with this news 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.