Common name: Blue-spotted Bristletooth

General Information

The Blue-spotted Bristletooth, scientifically known as Ctenochaetus marginatus, is a unique and fascinating addition to any marine aquarium. This species is part of the Acanthuridae family, which includes the surgeonfish and tangs. Known for its distinctive stripes and bristle-like teeth, the Blue-spotted Bristletooth is a popular choice among aquarists who appreciate its algae-eating capabilities and striking appearance.

In the wild, Ctenochaetus marginatus is found throughout the Indo-Pacific region, inhabiting coral reefs and lagoons. Its natural role as an algae grazer makes it a valuable member of the reef ecosystem, helping to control algae growth and maintain coral health.

Care

The Blue-spotted Bristletooth is relatively hardy, making it suitable for intermediate hobbyists. It thrives in well-established aquariums with plenty of live rock to graze on. A tank size of at least 300 liters is recommended to provide ample swimming space and grazing surfaces. The aquarium should mimic its natural habitat, with stable water conditions and moderate water flow.

To enhance its environment, include plenty of live rock formations and crevices. This not only provides grazing opportunities but also offers hiding spots, which are essential for the fish's comfort and stress reduction.

Diet and Feeding

In its natural habitat, the Blue-spotted Bristletooth primarily feeds on algae. In captivity, it should be offered a diet rich in marine algae and vegetable matter. High-quality spirulina flakes, nori, and algae wafers are excellent choices to keep this fish healthy and vibrant.

Feed the Blue-spotted Bristletooth small portions several times a day to mimic its natural grazing behavior. This feeding regimen supports its digestive health and helps maintain optimal water quality by preventing overfeeding.

Behavior and Compatibility

The Blue-spotted Bristletooth is generally peaceful but can exhibit semi-aggressive behavior towards other tangs, especially if introduced to the tank after them. It is best to introduce this species as one of the first tangs in the aquarium to minimize territorial disputes.

This species is reef-safe, making it an ideal choice for community reef tanks. It coexists well with a variety of other peaceful fish and invertebrates, provided it has sufficient space to establish its territory.

Health and Common Issues

With proper care, the Blue-spotted Bristletooth can live for many years in captivity. Maintaining stable water parameters and a balanced diet is crucial for its health. Regular observation for signs of stress or disease, such as ich or marine velvet, is essential.

When selecting a Blue-spotted Bristletooth, choose individuals that are active, alert, and free from visible signs of illness. A healthy specimen will have vibrant colors, clear eyes, and smooth fins.

Habitat

Ctenochaetus marginatus is naturally found in the coral reefs of the Indo-Pacific region. It prefers environments with abundant live rock and coral structures, providing both food and shelter. Replicating these conditions in captivity will ensure the fish's well-being and longevity.