Steelhead Trout (IMAGE) Purdue University Caption Steelhead trout, a member of the salmon family that lives and grows in the Pacific Ocean, genetically adapted to an entirely freshwater environment in 120 years. Credit John McMillan 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.