Alewife (IMAGE) Marine Biological Laboratory Caption A researcher measures an alewife (Alosa pseudoharengus) specimen for a study on how coastal urbanization affects the migratory fish's size and health (Monteiro Pierce et al, Can. J. Fish Aquat. Sci., 2020). Credit Rita Monteiro Pierce Usage Restrictions Please use with proper 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.