These gorgeous, long-tailed marine creatures—formerly known as Siamese fighting fish—have been famous for centuries for their aggressive nature, which breeders have exploited in order to fight them, ...

Beneath the ocean’s surface lies a world bursting with color—far more vibrant than many of us realize. From neon-bright fish to spotted crustaceans, some of the most colorful sea animals on the planet ...

Species are fizzling out of existence at a rate faster than any other time in human history—and no one is more aware of that fact than National Geographic photographer Joel Sartore. After 13 years of ...

In nature, the ability to change color can be key to survival. Vision is a very important sense in much of the animal kingdom, and many animals have come up with unique ways to use this sense to ...

Many animals in the tropics are colorful for a number of reasons, including some you might not expect. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...