Common name: Humpback Unicornfish

General Information

The Humpback Unicornfish, scientifically known as Naso brachycentron, is a distinctive member of the surgeonfish family, Acanthuridae. Recognized for its prominent hump on the forehead and a horn-like projection, this species is a fascinating addition to large home aquariums. Native to the Indo-Pacific region, it primarily inhabits outer reef slopes and lagoons, showcasing its adaptability to various marine environments.

While not as commonly kept as other surgeonfish, the Humpback Unicornfish is appreciated by advanced aquarists for its unique appearance and relatively peaceful demeanor. Its importance in the hobby is primarily due to its striking look and the challenge it presents in terms of care and space requirements.

Care

Caring for the Humpback Unicornfish requires a large tank, ideally over 1000 liters (260 gallons), due to its potential size and active swimming habits. It thrives in aquariums that replicate its natural habitat with ample swimming space and live rock for grazing. Stable water conditions with efficient filtration are crucial to maintain its health.

This species is best suited for experienced aquarists due to its size and specific care needs. Regular monitoring of water quality and a well-planned tank environment are essential to its well-being.

Diet and Feeding

The Humpback Unicornfish is primarily herbivorous, feeding on algae and other plant materials in the wild. In captivity, it should be provided with a diet rich in marine algae, spirulina, and high-quality vegetable-based pellets. Supplementing with occasional meaty foods like mysis shrimp can ensure a balanced diet.

Feed them multiple times a day to meet their high metabolic needs, ensuring they have constant access to food. This feeding regimen supports their growth and vibrant coloration.

Behavior and Compatibility

Known for its generally peaceful nature, the Humpback Unicornfish can be an excellent choice for a community tank with other large, non-aggressive fish. It may exhibit territorial behavior if housed in too small a tank or if its dietary needs are not met.

While not aggressive, it is important to ensure adequate space and resources to prevent competition and stress. They are not known to be toxic, but their large size and potential territoriality should be considered when selecting tank mates.

Health and Common Issues

With proper care, the Humpback Unicornfish can live a long and healthy life in captivity. Key factors in maintaining their health include a stable environment, a balanced diet, and regular monitoring for signs of stress or disease.

When selecting a specimen, look for active individuals with clear eyes and smooth skin. Avoid fish with visible signs of illness or injury.

Common health issues include ich and marine velvet, which can be managed with proper quarantine procedures and treatment. Regular water changes and maintaining optimal water conditions are crucial in preventing these ailments.

Habitat

Naso brachycentron is found in the Indo-Pacific region, from the eastern coast of Africa to the Hawaiian Islands, including the Red Sea and the Great Barrier Reef. It prefers outer reef slopes and lagoons where it can graze on algae.

These fish are accustomed to warm, clear waters with moderate to strong currents, conditions that should be replicated in captivity to ensure their comfort and well-being.