Molly Dorsal Fin Evolution (VIDEO) University of California - Riverside This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption This video shows how molly male dorsal fin has evolved through sexual selection, using a living species that is close to the ancestral state and another living species with a huge fin that has moved farthest from the ancestral state. Credit UC Riverside 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.