A new study shows that cichlid fish reared in larger social groups from birth display a greater and more extensive range of social interactions, which continues into the later life of the fish.

What is a group of fish called? Learn the difference between a school and a shoal, plus unique collective nouns for fish.

A coalition of southeast Michigan environmental groups uncovered something troubling when they analyzed the bodies of more than 60 fish caught by anglers casting on the Huron and Rouge rivers. Every ...

Fish, the most biodiverse vertebrates in the animal kingdom, present evolutionary biologists a conundrum: The greatest species richness is found in the world's tropical waters, yet the fish groups ...

When birds and fish move around, they often do so in large groups. These groups are called flocks in the bird world, but when it comes to fish, we commonly refer to these groups as schools. Image ...