Zebrafish Pigment Cells (IMAGE) University of Virginia Caption University of Virginia researchers have discovered cells in zebrafish that are able to change into another cell type, in this case from those that produce the pigment melanin to cells that do not. Credit UVA Usage Restrictions For use by news media only. 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.