Acanthurus gahhm

Datasheet

General Description

The Black surgeonfish, a member of the Acanthuridae family, primarily feeds on various types of algae, making it a popular choice for coral aquariums due to its algae-cleaning capabilities. Most Surgeonfish possess a scalpel near their caudal fin, a defense mechanism that can inflict deep lacerations, warranting caution during handling and when fish engage in conflicts.

Aquarium Suitability

Acanthurus species, including the Black surgeonfish, have specific requirements for tank size, environment, and water quality. They impose higher demands in these aspects compared to fish of the genus Zebrasoma, being vital considerations for successful husbandry.

Care and Hardiness

Black surgeonfish are of average hardiness, thriving in well-established aquariums with ample space for swimming. Regular feeding with algae-based foods and a varied diet is essential to maintain their health, immunity, and overall well-being.

Reef Suitability

Black surgeonfish are consistently reef-safe, rarely causing disturbances to corals or invertebrates while focusing their attention on algae grazing. However, larger Palettes/Blue tangs may display exceptions in reef compatibility.

Aquarium Setup

When housed in an aquarium, Black surgeonfish spend the majority of their time swimming and foraging for algae on rocks and substrate. Establishing a hierarchy when multiple surgeonfish are present is crucial, with the most aggressive species added last. Adequate hiding spots should be provided for individual rest areas.

Behaviour

Although typically non-aggressive towards other fish types, Black surgeonfish may exhibit aggression towards similar species, necessitating caution when introducing multiple Acanthurus species or Zebrasoma xanthurum to the same tank. Ensuring enough hiding spots and minimizing stress are key to maintaining a harmonious environment.

Feeding and Diet

Black surgeonfish have a diet consisting of macroalgae like seaweed and nori, as well as microalgae such as spirulina. Regular and frequent feeding—preferably algae-based—multiple times a day is crucial for their dietary needs and immune system support.

Dimorphism and Captive Reproduction

N/A

Habitat and Distribution

The Black surgeonfish, specifically the Acanthurus gahhm species, is endemic to the Red Sea and the Gulf of Aden in the Western Indian Ocean. Its natural habitat includes coral reef environments where it primarily grazes on algae from rocks and stones, contributing to the ecosystem's balance and vitality.