Adult Alewife (IMAGE) American Institute of Biological Sciences Caption Adult alewife that was transported above impassable barriers and released into Potanipo Lake, N.H. Adult alewife spawn in freshwater lakes before returning to the ocean. Credit Steven Mattocks 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.