While Betta splendens are unremarkable in appearance until agitated, when they become colorful animals, ornamental Betta fish boast their famous bright colors as the result of breeding.

While these hues are splendid to marvel at, the color actually serves as a warning sign to potential predators: Eat me and I will poison you. The way that these creatures and other animals evolved to ...

This is a classic example of sexual selection using color signaling. Conspicuous colors are also displayed by toxic animal species, including many venomous snakes and the brilliantly colored poison ...

A recent study finds that color vision evolved in animals more than 100 million years before the emergence of colorful fruits and flowers. And there has been a dramatic explosion of color signals ...