Wildtype and Calamity Zebrafish Embryos (IMAGE) Vanderbilt University Caption Embryos with the calamity mutation (shown below a normal embryo) exhibit so many developmental problems that they fall apart when they are about two days old. Credit Solnica-Krezel Laboratory 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.