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8 Animals That Are Blue (Pictures)

Blue is one of the most elegant and prominent colors on Earth, but finding animals that are blue in nature isn’t always an easy task. Some colors are common among animals because of their ability to produce pigments or absorb them from the food they consume.

In this article we look at 8 examples of animals that are blue or partially blue!

8 Animals That Are Blue

In the flora and fauna world, they can produce blue pigments because of the anthocyanin. Below is a list of animals that are blue.

1. Blue Jay

Blue Jay bird perched on a log
Blue Jay bird perched on a log | Image by GeorgiaLens from Pixabay

Scientific name: Cyanocitta cristata

The Blue Jay is a common backyard bird with beautiful blue feathers. and are known for their love of peanuts. The pigment in the Blue Jay feathers is melanin, which is brown. The blue color results from scattering light through the tiny air sacs on their feathers, making them appear blue.

However, since pigments do not cause the color, Blue Jay’s feathers could change color back to black or brown by altering their structure. Blue Jays are known for being an intelligent songbird with their perky crest and ability to mimic many calls.

2. Peacocks

Indian peafowl on metal rail
Indian peafowl on metal rail | image by Blondinrikard Fröberg via Flickr | CC BY 2.0

Scientific name: Pavo cristatus

Another blue animal is the Indian peafowl, a bird endemic to India. Peacocks are awed by humans because of their majestic and intricate bright feathers. Only the peacocks (male peafowls; peahens for female peafowl) have bright blue and green feathers, while peahens are brown and have a few green colors on their neck.

The blue coloration in the male peafowls is because of sexual selection. Brighter colored peacocks are more attractive and appealing to peahens and are likely to find mates.

The peacocks fan their iridescent tail feathers, known as trains signaling they are ready for matin. Before they rush to the peahens, shaking the trains to catch their attention.

However, like blue jays, peacock feathers contain melanin, and their blue color is derived from their structure. Their feathers have a crystalline lattice of microscopic rods that reflects the light causing them to appear blue—the same as their green color.

3. Blue Glaucus

Blue Glaucus floats in water
Blue Glaucus floats in water | image by lostandcold via Flickr | CC BY 2.0

Scientific name: Glaucus atlanticus

This next animal might not be familiar to you, but it does exist, and its color is blue! The Blue Glaucus is a tiny sea slug, often referred to as the Blue Dragon. It is an inch long and has flowing appendages around its body.

The Blue Glaucus can blend well with the ocean, known as countershading. It is usually back-floating because this is their defense mechanism against their predator. This cute animal is found in temperate and tropical waters in the Atlantic, Pacific, and Indian Oceans.

4. Blue Poison Dart Frog

Blue poison dart frog on the rock
Blue poison dart frog on the rock | image by Martinus Scriblerus via Flickr | CC BY 2.0

Scientific name: Dendrobates tinctorius azureus

The Blue Poison Dart Frog is a tiny frog with bright blue color. From the back to the top of its head are light colored sky blue, while the belly and legs have a darker blue hue. It has a lifespan of five to seven years, and the dark spots on the Blue Poison Dart Frog serve as a warning for its predators.

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It is a toxin that is poisonous and can be fatal when exposed to it. This phenomenon is known as aposematism and is caused by the structure of the frog’s skin cells. The frog’s skin has a layer of cells called xanthophores that produce yellow pigments, and the top layer of cells is called iridophores.

The Blue Poison Dart Frog has reduced xanthophores, producing no yellow pigments on its skin, making them blue. These poisonous frogs are found in Suriname and Northern Brazil. They got their name from frog hunters, who dip the tips of their darts in the poison to create a deadly weapon.

5. Spix’s Macaw

Spix’s macaw on wood perch
Spix’s macaw on wood perch | image by Rüdiger Stehn via Wikimedia Commons | CC BY-SA 2.0

Scientific name: Cyanopsitta spixii

Although this animal species no longer lives in the wild, the Blue Spix Macaw is one of the world’s rarest macaws. It is a small yet elegant bird, dull blue with a faint green tinge on the breast and abdomen plumage. Last 2000, the Spix’s Macaw was declared extinct in the wild, and they are only a few held in captivity.

You might have seen this bird since it’s the main character in the movie Rio, bringing awareness that all parrot species are in danger. Spix’s Macaw is a social and intelligent bird that often flocks together from 10 to 30 birds.

Spix’s Macaw is endemic to Brazil, and they use their vocalization to communicate with their flock, mark territory and know one another. They are also popular because they can mimic human speech.

6. Royal Blue Tang

Royal blue tang underwater
Royal blue tang underwater | image by U.S. Fish and Wildlife Service Headquarters via Flickr | CC BY 2.0

Scientific name: Paracanthurus hepatus

Remember that fish in Finding Nemo that has suffered from anterograde amnesia or short-term memory loss? You can remember her, for she is the only character with that deep blue color with a yellow tail and fin. The Royal Blue Tang is often referred to as surgeonfish.

It usually grows to the size of a human hand but can range from four to fourteen inches in length. Royal Blue Tang is native to Indo-Pacific coral reefs, and you can easily spot them because of their vibrant color. They are also one of the most common and popular marine aquarium fish worldwide.

7. Betta Fish

Betta fish in aquarium
Betta fish in aquarium | image by h080 via Flickr | CC BY-SA 2.0

Scientific name: Betta splendens

Betta fish, or the Siamese fighting fish, comes in various colors. They make great pets, mostly due to their beautiful flowing fins. Only male bettas have flowing fins, while female bettas look like regular fish.

Bettas originate from Thailand and are called fighting fish because kids would catch these fish and put them together in one container to watch them fight. Through the years, more colors have been introduced and bred to create various colors.

8. Blue Morpho

Blue morpho on green leaves
Blue morpho on green leaves | image by Charles Patrick Ewing via Flickr | CC BY 2.0

Scientific name: Morpho

Butterflies are one of the animals that gives you some magical feeling. They range in different patterns and colors— one of the most-sought butterfly colors is blue.

The Blue Morpho is known for its spectacular blue color on the top side of its wings. No, this isn’t because of the pigmentation but the configuration of their scales reflecting the light.

The Blue Morpho is one of the largest butterflies in the world, with a wing span of five to eight inches. For some species of morphos, male butterflies tend to be bluer compared to females; for several species, male butterflies are blue, while females have a brown or yellow hue.

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