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 ...

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.

BOSTON — Fishermen say it's bunk. Researchers have trouble explaining what it's about. But the science of determining the number of fish in the sea has rarely been more important, or scrutinized. At ...

Each spring, river herring populations migrate from Massachusetts coastal waters to begin their annual journey up rivers and ...

Researchers at MIT, Northeastern University and the Naval Research Laboratory have for the first time used a low-frequency sonar remote system to track fish populations and scan vast sections of the ...

LOWER RUSSIAN LAKE -- What the heck's a weir, anyway? "It's French for fence," explained Alaska Department of Fish and Game Area Management Biologist Robert Begich. Put simply, the fish weirs used by ...

PEEBLES ISLAND — This is the day for counting fish along the banks and piers of the Hudson River. It’s the annual Great Hudson River Estuary Fish Count. [anvplayer video=”5127163″ station=”998132″] We ...