Dorado Catfish (IMAGE) Wildlife Conservation Society Caption This is an image of a live dorado catfish in a tank. A newly published study on the dorado and other "goliath" catfish has revealed that the dorado's full life-cycle migration stretches more than 7,200 miles in length. Credit Michael Goulding/WCS. Usage Restrictions One-time usage 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.