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 ...

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 ...

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 ...

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 ...

SALEM, Ore. (KTVZ) — Nearly 50 percent of hunters and anglers in Oregon are using e-tagging. Instead of carrying a paper tag, they can tag fish and wildlife on their phone using the MyODFW app. Major ...

It's hard to do research when your test subjects keep getting eaten. Scientists studying the movements of smaller fish in the Great Lakes increasingly use a technology called acoustic telemetry — ...