(IMAGE) Institute of Science and Technology Austria Caption A tiny drop of water. Under the microscope, the researcher positions the fish embryos, which are floating in the water. Credit © ISTA Usage Restrictions Free to use when reporting about ISTA. License Original 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.