Alligator Gar (IMAGE) Forschungsverbund Berlin Caption With a maximum weight of about 130 kilograms, the alligator gar is one of the largest freshwater fishes in North America. Credit Zeb Hogan Usage Restrictions The image may only be used with appropriate caption and credit. 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.