Tube-Eye Fish (IMAGE) University of Maryland Caption The tube-eye fish, Stylephorus chordatus, was found to use five different rod opsins within its eyes. The long cylindrical shape of its eyes increases light capture and also enables the fish to move the eyes from a horizontal to a vertical position. Credit Dr. Wen-Sung Chung, University of Queensland, Australia 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.