Live-Bearing Bony Fishes (IMAGE) University of Zurich Caption Live-bearing bony fishes emerged for the first time during the Triassic. The picture shows the Triassic ray-finned fish Saurichthys with two embryos (close-up). Credit Image: UZH 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.