Juvenile Steelhead Trout Undergoing an IHNV Epidemic (image) Cary Institute of Ecosystem Studies Share Print E-Mail Caption A single hatchery pond of juvenile steelhead trout undergoing an IHNV epidemic. Credit Credit: Dworshak National Fish Hachery, Orofino, Idaho. Usage Restrictions Can be used to promote this press release. Share Print E-Mail 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.