Common name: Epaulette surgeonfish

General information

The Epaulette Surgeonfish, scientifically known as Acanthurus nigricauda, is a distinctive and attractive marine fish that is occasionally available in the aquarium trade. It is known for the prominent black spot at the base of its tail, which is where its alternative common name, Blackspot Surgeonfish, is derived from. This species is part of the Acanthuridae family, which includes other popular surgeonfish and tangs known for their utility in controlling algae in the aquarium.

Care

Epaulette Surgeonfish require a spacious aquarium with plenty of swimming room and a well-established live rock setup that encourages algal growth, which is a significant part of their diet. They are active swimmers and can be territorial, so it's important to introduce them to the tank last to minimize aggression. A varied diet that includes marine algae, spirulina, and high-quality commercial foods designed for herbivorous fish will help maintain their health and vibrant coloration.

Reproduction

In the wild, Epaulette Surgeonfish are known to form spawning aggregations, but breeding them in captivity is quite challenging. They release eggs and sperm into the water column, where fertilization occurs. The eggs are pelagic, drifting with the currents until they hatch.

Habitat

Epaulette Surgeonfish are found in the Indo-Pacific region, from the eastern coast of Africa to the central Pacific Ocean. They inhabit coral reefs and lagoon waters, often seen grazing on algae. They prefer areas with strong water movement and can be found at various depths, typically from the shallows down to about 30 meters.