"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 ...

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 ...

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 ...

Fish can distinguish between larger and smaller quantities, with an additional ability to "count" up to three, according to research on tropical angelfish. Angelfish are regarded as being one of the ...

Can fish do math? Well, no, not like people, but cichlids and stingrays have demonstrated that they can add and subtract by one when shown a group of up to five objects. Don’t believe it? Even the ...