Acanthurus olivaceus (Olive acanthure)

This fish lives alone. It has a scratch above the pectoral fins, surrounded by black.

The Acanthurus Olivaceus fish, also known as the blue chirurgian fish, is a hot and tropical water fish from coral reefs from the Indian and Pacific Oceans. It is characterized by its dark blue dress with white stripes on the sides and a bright yellow dorsal fin.

The blue-surgeon fish measures on average between 25 and 30 cm long, although some specimens can reach up to 40 cm in length. It has an elongated and side -compressed body, with a sharp head and a mouth with sharp teeth used to scrape and grind the algae on which it feeds. The dorsal finish of the blue chirurgian fish is characteristic, with a terminal part in the shape of a sharp blade which serves as a "surgical knife" to defend itself against the predators and fight with the other chirurgers.

Blue surgeon fish is a lonely and territorial fish, which generally lives alone or in small groups in coral reefs. It is active during the day, feeding mainly with algae which it nibbles on the rocks and corals. Blue surgeon is also known to clean other fish by scraping parasites and algae on their skin.

Blue surgeon is a popular fish in the aquariophilia because of its bright color and its active personality. However, it can be difficult to maintain in aquarium because of its specific food and environmental needs. It is important to provide a large enough aquarium with rocks and corals so that it can eat and hide, as well as a varied diet composed mainly of fresh and frozen algae.

In conclusion, the blue surgeon-surgeon is a colorful and active tropical fish from coral reefs of the Indian and Pacific Ocean. Although popular in aquarophilia, it can be difficult to maintain because of its specific food and living environment needs.

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