Naso hexacanthus

Naso hexacanthus: the Streamlined Blue Surgeonfish, a Graceful and Peaceful Swimmer

The Naso hexacanthus, often referred to as the blue naso or streamlined blue surgeonfish, is a remarkable marine fish known for its slim and elongated body and metallic bluish tint. This fish belongs to the Acanthuridae family and is renowned for its high activity level, robustness, and calm temperament. Its constant swimming in the open areas of the reef tank brings an elegant and natural dynamism.

In adulthood, the Naso hexacanthus can measure between 40 and 50 cm, making it one of the largest surgeonfish available in marine aquariums. Its streamlined profile and slightly rounded small head enhance its hydrodynamics and ability to thrive in the strong tropical currents from which it originates.

A Peaceful and Active Behavior

The naso hexacanthus is a peaceful fish that can coexist perfectly with other reef species, including non-territorial surgeonfish. It is advisable to introduce it when young if you wish to keep multiple individuals of the Naso genus, to promote harmonious acclimation.

It is important to note that this fish, although imposing, is not dominant in the social hierarchy of the tank but requires a very large swimming space. Therefore, it is not recommended for any aquarium less than 1000 liters.

A Spacious and Well-Circulated Environment

An aquarium with a volume exceeding 1000 liters is required for the Naso hexacanthus. This fish needs a stable environment, good water quality, moderate to strong circulation, and many open swimming areas. The rocky areas and substrate should be designed so it can also graze algae during the day.

Proper oxygenation, combined with a sufficient water height, is essential to ensure its comfort. This fish almost never hides and always moves in open water.

A Strict Herbivore Diet

The Naso hexacanthus is a strict herbivore. It naturally feeds on brown, red, and green algae found in its environment. In the aquarium, it requires a diet rich in plant material:

• Nori algae fixed on a clip, renewed daily.
• Vegetable pellets and spirulina-enriched flakes.
• Occasional supplements of krill, artemia, or mysis are tolerated but should not dominate its diet.

An appropriate diet helps preserve its vitality, slow but steady growth, and the natural intensity of its bluish reflections.

A Prestigious Fish for Very Spacious Marine Aquariums

The blue surgeonfish Naso hexacanthus is a fish of great presence, reserved for experienced aquarists with a very large and well-maintained tank. Thanks to its peaceful nature, strict algae-eating diet, and elegant presence, it perfectly complements an exceptional reef population.

For those seeking a large, active, non-aggressive, and decorative swimming fish, the Naso hexacanthus is an ideal choice, provided its vital need for space and dietary discipline are respected.