What can be more beautiful than some colorful animals? Maybe you do not know some of them, but they are simply amazing! Click through to see them!

Siamese fighting fish

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.

Jewel bug

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

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.

Yemen chameleon

Also known as the veiled chameleon, this 2-foot-long reptile has a base color of green, streaked with blue, brown, and yellow stripes. However, true to its chameleon nature, it can change color according to its mood. Its nervous system sends a message to the pigment-containing chromatophore cells in its skin, telling them to expand or contract; in response, they turn brown, blue, red, or yellow

Scarlet macaw

Believe it or not, the vivid feathers on this largest parrot species actually helps it to blend in with the bright fruits and flowers of the South American rainforest in which it lives, reports National Geographic. Others in the 17 different macaw species—such as the red-fronted and great green macaws—are almost (but not quite!) as colorful as this one.

Fiery-throated hummingbird

This little neotropical avian native of Costa Rica and Panama is downright bedazzling—shimmering with what the Cornell Lab of Ornithology calls a golden-copper and blue-green sheen. Glittery as pictures make it appear, though, as one amateur photographer pointed out, its full spectrum of color is only visible from certain angles.

Gouldian finch

A Gouldian finch fun fact: The wee birds may have red, black, or yellow heads (in addition to their purple, green, blue, and orange body feathers). And although they are all members of the same species, they prefer to mate with other Gouldian finches that sport the same head color. According to scientists, the red-headed finches are more aggressive than the black-headed ones.