The natural world is full of bright surprises, like these amphibian, insect, avian—and even mammal—species.

Siamese fighting fish

Betta splendens(Halfmoon)panpilai paipa/Shutterstock

These gorgeous, long-tailed marine creatures have ugly personalities—which breeders have exploited in order to fight them, arena (er, fishbowl) style. Also known as bettas, according to the International Betta Congress, their bright colors are the result of breeding, too; in the wild, they’re downright dingy. You won’t want to miss these 20 stunning underwater photos.

Jewel bug

Colourful baby bugs Chrysocoris stollii on greens leaves from macro photography with blurry backgroundsJirasak Chuangsen/Shutterstock

A member of the family Scutelleridae, this is a true bug—that is, an insect with sucking mouthparts. This psychedelic spotted beauty sucks the life out of crops like pigeon peas in its native southeast Asia. Its iridescent coloring is the result of a swath of pigment lying beneath clear, stacked layers that reflect light.

Lilac-breasted roller

Lilac-breasted Roller (Coracias caudata) outdooraaltair/Shutterstock

The national bird of Kenya and Botswana enlivens its native grasslands with its blocks of white, blue, purple, turquoise, green, and black plumage—and, unusually, the female is just as colorful as the male. Vivid as they are, though, The Spruce reports that their eggs are just plain white. Fans of our feathered friends will get a hoot out of our favorite funny bird photos.