Top 10 most beautiful fish species in the world

This box-shaped cutie is found in the Atlantic, Pacific and Indian oceans. Boxfish remain bright yellow only while they're quite young: as they age, their color fades.

This venomous marine fish looks like a fairytale creature. It's found in the Indo-Pacific. Some of its fin rays are highly toxic and harmful to humans. The lionfish's venom can cause nausea, vomiting, paralysis of the limbs and even death – so the beautiful appearance of this fish is nothing but a warning sign.

It's hard to believe that the pattern on this creature's body wasn't created by a cartoon artist! Like other triggerfish, it can be found in the tropical and subtropical oceans of the world.

The eye-catching color combination on the scales of this fish resembles the feathers of a beautiful bird. Anyway, that's not why it was named parrotfish: the fish got its name because of its lips that look like a beak.

These beautiful guys have circles on their bodies only when they're juveniles: when they reach adulthood, the circles are replaced with yellow and blue stripes.

This beautiful fish is often kept in aquariums. In the wild, it can be found only in one place on the planet: near the Banggai Islands of Indonesia.

These outstanding fish are native to the deep tropical waters of the Atlantic Ocean. Despite being so brightly colored, these creatures are highly cryptic: they love living as deep as possible and remain unseen to all living creatures.

These fantastic fish live in the warm waters of the Pacific. In the wild, they stick to a very picky diet: mandarinfish eat only two specific types of small crustaceans. That's what makes them difficult to keep in captivity, but they still remain popular in the aquarium trade.

These amazing freshwater fish live in the Amazon. There are three species of them that come in different colors: blue (in the picture), red, green or brown. The patterns can also vary from one individual to another.

These fish are native to the Indo-Pacific. It's probably the most well-known species on the list because of Dory, a famous cartoon character from Finding Nemo.