Common name: Japan surgeonfish

General information

The Japanese Surgeonfish, also known as the Powder Brown Tang or White-faced Surgeonfish, is a striking marine fish that adds both beauty and grace to any saltwater aquarium. Acanthurus japonicus is known for its distinctive coloration, with a brownish body, a white face, and a vibrant orange stripe that runs along the base of its dorsal fin. This species is part of the Acanthuridae family, which is renowned for the scalpel-like spines located on either side of the caudal peduncle, used for defense and territorial disputes.

Care

Japanese Surgeonfish require a spacious tank with plenty of swimming room and a well-established environment with stable water conditions. They are active swimmers and need ample space to roam. A diet rich in marine algae and vegetable matter is crucial for their health, as it helps prevent nutritional deficiencies and supports their immune system. Supplementing with meaty foods can provide additional nutrients. They are generally peaceful but can be territorial, especially towards conspecifics or similar-looking species.

Reproduction

In the wild, Acanthurus japonicus exhibits a group-spawning behavior, where several individuals release eggs and sperm simultaneously in open water. This increases the chances of fertilization. In the home aquarium, breeding is rare and challenging due to the need for precise environmental conditions and large swimming spaces for courtship.

Habitat

Native to the Western Pacific, the Japanese Surgeonfish is commonly found in coral-rich areas and clear lagoons, typically at depths ranging from 2 to 30 meters. They are often seen grazing on algae growing on the reef and are an integral part of the reef ecosystem, contributing to the control of algal growth.