Learn about the evolutionary ease of cichlid fishes, which transition from simple to complex teeth (and vice-versa) faster ...

It's not what you do, it's how readily you do it. Rapid evolutionary change might have more to do with how easily a key innovation can be gained or ...

No, you can't cuddle them, but these fish sure are adorable. Here's what to know before adding them to your tank.

Every new aquarist dreams of filling their new aquarium with beautiful creatures. However, it’s important to do research ...