ALBUQUERQUE, N.M., -- Where do fish occur in a river? To the casual observer, all parts of a stream seem alike: wet! But fish experience the river as complex habitat, and discern many subtle ...

Spring is just a few weeks away, and for the Barnstable Clean Water Coalition that means one thing in particular: It's time to count fish. Not just any fish. River herring. The organization is putting ...

Kevin Guadalupe walked along the banks of the stream as Montana Stevens, outfitted in snorkel gear, popped his head out of the water to report how many fish he’d seen. “Two adults, two juveniles,” ...

Anglers are counting down the days to May 10 after the Department of Natural Resources announced you can keep two walleyes ...

There are plenty of fish in the sea, but how can you count stock levels or protect endangered fish without seeing or catching them? Subscribe to our newsletter for the latest sci-tech news updates.

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Scientists at the Harte Research Institute ...