Common name: Whitecheek Surgeonfish

General Information

The Whitecheek Surgeonfish, scientifically known as Acanthurus nigricans, is a striking species popular among aquarium enthusiasts for its vibrant colors and dynamic presence in the tank. It is easily recognizable by its dark body contrasted with a bright white cheek patch and a distinctive yellow band across its dorsal fin. This fish is a member of the Acanthuridae family, commonly referred to as surgeonfish or tangs due to the scalpel-like spines on either side of their tails.

In the wild, these fish are found throughout the Indo-Pacific region, from East Africa to the Hawaiian Islands. They are often seen grazing on algae in coral reef environments, playing a crucial role in maintaining the health and balance of these ecosystems.

Care

Caring for the Whitecheek Surgeonfish requires some experience, as they are sensitive to changes in water quality and require a well-maintained environment. They are best kept in large aquariums with plenty of swimming space and live rock to graze on. A tank size of at least 300 liters (about 80 gallons) is recommended to accommodate their active swimming habits and territorial nature.

A varied diet is essential for their health, including marine-based algae, spirulina, and high-quality prepared foods. Regular feeding and a stable environment are key to maintaining their vibrant colors and overall health.

Diet and Feeding

In their natural habitat, Whitecheek Surgeonfish are primarily herbivores, feeding on a variety of algae. In captivity, their diet should be rich in marine algae and supplemented with spirulina, seaweed sheets, and specially formulated herbivore pellets. Offering a variety of foods will help ensure they receive all the necessary nutrients and prevent dietary deficiencies.

Feed them small amounts several times a day, rather than one large feeding, to mimic their natural grazing behavior and support their digestive health.

Behavior and Compatibility

Whitecheek Surgeonfish are known for their semi-aggressive temperament, especially towards other tangs or similarly shaped fish. They are best kept as the only tang in the aquarium unless housed in a very large system. They can coexist with a variety of other reef-safe species, but care should be taken to avoid overly aggressive tank mates.

These fish are active swimmers and require ample space to roam. They are also known to establish territories within the tank and may exhibit aggressive behaviors if they feel crowded or threatened.

Health and Common Issues

Whitecheek Surgeonfish are susceptible to common marine diseases such as ich and marine velvet. Quarantining new additions and maintaining excellent water quality are essential preventative measures. Regular monitoring for signs of stress or illness and prompt treatment with appropriate medications can help manage health issues.

Habitat

In the wild, Whitecheek Surgeonfish inhabit coral reefs and lagoons, often found at depths ranging from 2 to 20 meters (about 6 to 65 feet). They prefer areas with abundant algae growth, which provides both food and shelter. In captivity, replicating these conditions with live rock and stable water parameters is crucial for their well-being.