Fish Tracking/PNNL (IMAGE) DOE/Pacific Northwest National Laboratory Caption Researchers at Pacific Northwest National Laboratory developed a receiver that can transmit near-real-time information on fish tracking to inform decisions about dam operations that support fish passage. Credit Composite photo by Cortland Johnson | Pacific Northwest National Laboratory Usage Restrictions None License Original 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.