Devils Hole Pupfish (image) Desert Research Institute Caption The Devils Hole pupfish is about an inch in length. Its current habitat, located in the Ash Meadows National Wildlife Refuge, is the only place in the world where the fish exists. Credit Thomas M. Baugh Usage Restrictions None 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.