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 ...

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 ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through the links below." While fish don’t have much mathematical ability, a new study shows that some species can add and ...

Counting fish is a very inexact science — so inexact that some people hesitate even to call it science. So, common sense would say that if a new technique offered the promise of much more accurate ...

If someone asked you if fish could count, your response would probably be… probably not? Counting seems like an ability far beyond the cognitive functions of a fish, right? Perhaps not. While the ...

CENTERVILLE — In the early morning, just as the stars are fading out of view and the eastern sky is separating into the layered colors of dawn, Jane Ward makes her way to the edge of Centerville's ...

Either count the fish or count on many more decades of debate about what's helping and what's hurting Pacific Northwest salmon. That's what leaders of a yearlong effort to determine the best ways of ...

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. We were there today for the fish count at ...

"It's a whole new way of looking at what's in the ocean." In this undated file photo, a large group of yellowfin tuna is shown in the waters off Vibo Valentia, Calabria, Italy. Giordano Cipriani/Getty ...