To study fish or invertebrates in the sea, scientists often mark individual animals with acoustic tags that make soft, ultrasonic pinging noises. The marked swimmer can’t hear that noise, but other ...

Tracking some young salmon has always had one hitch: the tiny fish are too small for the injectable tags researchers use to track fish as they move past hydropower dams. To make the tags smaller, ...

Fish tagging and growth assessment are critical components in fisheries research and management, providing insights into individual life histories, population dynamics, and the overall health of ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. NEW ORLEANS (AP) — When the red snapper ...

If you're going to check how fish are affected by hydroelectric dams, it's particularly important to monitor tiny, delicate individuals. That's why US scientists have developed what is claimed to be ...

For years, scientists at Pacific Northwest National Laboratory have worked on fish tags to monitor salmon. Those original tags weighed around 2 grams, less than what a penny weighs. Now, new ...

RFID innovation is forging into increasingly challenging environments to help industries benefit from automatically identifying objects. One such innovation is taking place underwater, with the ...