Cobalt Blue Arrow Poison Frog, a subspecies of Dendrobates tinctorius Stained Arrow Poison Frog, is a species of the genus Ranunculus in the family Ranunculidae. Enjoys humid environments, has a wide range of food, strong reproductive ability, and is relatively easy to raise. Although it is a large poison dart frog, its body length is only about 4 centimeters, and it is covered in fluorescent blue, which is considered a rare color exception in the animal kingdom. In fact, many poison dart frogs have the same dazzling colors, and these special and gorgeous colors have a strong warning effect on predators (warning colors). Listed on the World Conservation Union's Red List of Endangered Species.