Whitemargin Unicornfish Naso annulatus

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The Whitemargin Unicornfish brings dynamic energy and striking white-trimmed fins to your saltwater aquarium. This active, algae-grazing species thrives in spacious 100+ gallon reef setups with plenty of live rock to explore.

Categories:

Saltwater

Tangs (Surgeonfish)

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Whitemargin Unicornfish: Care Guide and Features

The white-margin unicornfish adds vibrant color and dynamic energy to your reef tank. This striking marine fish has a rich brown body and a bright white edge to the dorsal and anal fins. Its body is accented with delicate touches of blue and yellow that make a striking display as it swims. This unique species makes an imposing centerpiece if you want to add some splash to your aquarium with colorful saltwater fish. With proper care, your reef tangs will live healthy, active and thriving lives for years. Since you are bringing a living creature into your home, you need to prepare the right environment before purchase. See the important care parameters below to make sure you are set up properly for this species.

Ideal Tank Environment

Provide a spacious aquarium of 100 gallons or larger to allow plenty of swimming room.
Arrange live rock structures to create natural hiding spots and territory boundaries.
Install a tight-fitting lid on your aquarium to prevent any accidental escape attempts.

Whitemargin Unicornfish Diet and Feeding Guidelines

Offer a varied diet rich in marine-based seaweed, dried algae, and premium herbivore pellets.
Secure dried seaweed to a veggie clip or rock to encourage natural grazing behavior.
Feed your fish two to three small meals daily to support its active metabolism.

Behavior and Tank Compatibility

Expect active, curious swimming behavior as this species explores every corner of the tank.
Minimize aggressive territory disputes by providing abundant open space and rock caves.
Introduce this species alongside peaceful tank mates to maintain a balanced, calm reef community.

Care Facts and Unique Traits

Maximum Size: 39 inches
Diet: Herbivore
Behavior: Semi-aggressive
Unique Trait: White-edged dorsal and anal fins
Minimum Recommended Tank Size: 250 gallons
Max Tank Size: 350 gallons or larger
Scientific Name: Naso annulatus
Family: Acuranthidae

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