Common name: Sleek Unicornfish

General Information

The Sleek Unicornfish, scientifically known as Naso hexacanthus, is a remarkable species in the aquarium trade, prized for its unique appearance and behavior. Characterized by its elongated body, this fish adds an exotic touch to any marine aquarium. The species is native to the Indo-Pacific region, where it inhabits coral reefs and rocky coastal areas.

While not as commonly kept as some other species, the Sleek Unicornfish is appreciated by enthusiasts for its striking appearance and active swimming behavior. Its role in the ecosystem as a grazer helps control algae growth on reefs, making it a valuable species both in the wild and in captivity.

Care

Caring for a Sleek Unicornfish requires a spacious aquarium due to its potential size and active nature. These fish thrive in well-established systems with plenty of swimming space and live rock for grazing. A tank size of at least 500 liters is recommended to accommodate their size and swimming needs.

Maintaining stable water conditions with good filtration and regular water changes is crucial for the health of this species. They are sensitive to changes in water quality, so consistent monitoring is essential.

Diet and Feeding

As herbivores, Sleek Unicornfish primarily feed on algae and should be provided with a diet rich in marine-based greens. Offer a variety of foods such as nori, spirulina, and high-quality herbivore pellets to ensure balanced nutrition. Occasional treats of mysis shrimp or other protein sources can be included but should not be the main diet.

Feed them multiple times a day, ensuring they have constant access to food, as their grazing nature requires frequent feeding.

Behavior and Compatibility

Sleek Unicornfish are generally peaceful but can exhibit territorial behavior if not given enough space. They are best kept with other non-aggressive species in a community tank setting. Avoid housing them with overly aggressive or territorial tank mates that may stress them.

They can coexist with a variety of reef-safe fish and invertebrates, making them a good addition to a diverse marine aquarium.

Health and Common Issues

Sleek Unicornfish can live for several years in captivity if provided with proper care. They are susceptible to common marine ailments such as ich and marine velvet, so maintaining optimal water quality and a stress-free environment is important.

Regular observation for signs of stress or disease, such as changes in color or behavior, can help in early detection and treatment of potential health issues.

Habitat

In the wild, Naso hexacanthus is found in the warm waters of the Indo-Pacific, from the Red Sea to Hawaii. They prefer coral-rich areas and rocky reefs where they can graze on algae. Replicating this environment in captivity with live rock and stable water parameters will support their natural behavior and health.