One study finds that even cloned fish function with social cues, and as few as one individual can influence a shoal.

Introduced as live bait for trout in recreational fishing, the Eurasian minnow had a damaging impact on two lakes in ...

Reef fish near developed shores showed hidden signs of stress, even when adults appeared healthy and well fed.

The ghost pipefish's scruffy appearance probably helps it look like floating algae, allowing it to blend in with its environment. Researchers had been on the hunt for this strange creature for years a ...

According to animal experimentation statistics, fish are the second most commonly used group of animals in research after mice. They play an important role in aquaculture and also serve as model ...

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our ...

After nine months, the strange behavior that claimed the lives of endangered sawfish is back. Here’s what we know about what’s causing it. Dead sawfish washed up on beaches in the Florida Keys last ...

Our ability to count isn’t a distinct human trait. Animals can count, too. And, just like humans, some animals are better at math than others. For decades, researchers have designed experiments that ...