The orangeback angelfish or African pygmy angelfish (Centropyge acanthops) is an omnivorous marine angelfish

Marine angelfish

Marine angelfish are perciform fish of the family Pomacanthidae. They are found on shallow reefs in the tropical Atlantic, Indian, and mostly western Pacific oceans. The family contains seven genera and approximately 86 species...

. It has a blue body and yellow to orange colouration from the head and across the back. It is easily confused with the cherubfish

Cherubfish

The cherubfish, or pygmy angelfish is a gentle omnivorous marine angelfish, with a metallic blue body and yellow to orange colouration in parts of the head only. It is native to the Caribbean and Gulf of Mexico, and has a maximum length of 8 cm...

 (Centropyge argi), but in the latter the yellow to orange colouration only covers the head. It is native to the east coast of Africa

Africa

Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

, and reaches a maximum length of 8 cm.

When kept in an aquarium

Aquarium

An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants...

 orangeback angelfish are distributed throughout the tank. They prefer reef

Reef

In nautical terminology, a reef is a rock, sandbar, or other feature lying beneath the surface of the water ....

tanks to fish only tanks.

External links

• Centropyge.net info page