"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 ...

Many people tend to think of clownfish, with their distinctive white bars against an orange, red, or black background, as a friendly sort of fish, perhaps influenced to some extent by the popular ...

Mosquito fish don’t just count on each other for protection from predators — they literally count each other for such protection. These guppylike fish can use numerical information to identify the ...

Fish can distinguish between larger and smaller quantities, with an additional ability to "count" up to three, according to research on tropical angelfish. Subscribe to read this story ad-free Get ...

Anglers are counting down the days to May 10 after the Department of Natural Resources announced you can keep two walleyes daily on Lake Mille Lacs this year. Given the high numbers for the prized ...

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 ...

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 ...