Common name: Two-spot Bristletooth

General Information

The Two-spot Bristletooth, scientifically known as Ctenochaetus binotatus, is a fascinating species of tang that has captured the interest of many marine aquarists. Known for its unique feeding habits and distinctive appearance, this fish is a popular choice for reef aquariums. It is named for the two spots located near its tail, which are one of its most distinguishing features.

While not as widely recognized as some other tang species, the Two-spot Bristletooth plays a crucial role in maintaining the health of coral reefs by grazing on algae. This makes them an excellent addition to home aquariums, where they help keep algae under control and contribute to the overall balance of the ecosystem.

Care

Caring for the Two-spot Bristletooth requires attention to its specific needs. These fish thrive in well-established aquariums with plenty of live rock, which provides both food and shelter. They are relatively hardy but do best in tanks with stable water conditions and moderate to high water flow, mimicking their natural reef environment.

A tank size of at least 300 liters (approximately 80 gallons) is recommended to provide ample swimming space. The Two-spot Bristletooth appreciates a variety of hiding spots and grazing surfaces, which can be achieved by incorporating live rock and corals into the aquarium setup.

Diet and Feeding

The Two-spot Bristletooth is primarily a herbivore, with a diet consisting mainly of algae. In captivity, they should be provided with a variety of marine-based algae, such as nori or spirulina, along with high-quality herbivore pellets. Supplementing their diet with occasional meaty foods like mysis shrimp can help ensure they receive all necessary nutrients.

Feeding should occur several times a day, offering small amounts that can be consumed within a few minutes. This frequent feeding schedule helps mimic their natural grazing behavior and supports their active metabolism.

Behavior and Compatibility

Two-spot Bristletooths are generally peaceful and can be kept with a variety of other reef-safe species. They can be somewhat territorial, especially towards other tangs, so it is advisable to introduce them to the aquarium as one of the last additions to minimize aggression.

They are not known to produce toxins and pose no significant safety concerns to other tank inhabitants. However, they may occasionally show aggression towards conspecifics or similar species, particularly in smaller tanks.

Health and Common Issues

With proper care, Two-spot Bristletooths can live for several years in captivity. It is essential to maintain high water quality and provide a balanced diet to prevent common health issues. Regular monitoring for signs of stress or disease, such as ich or marine velvet, is crucial.

When selecting a Two-spot Bristletooth, choose individuals that are active and display vibrant coloration. Avoid fish that appear stressed or have visible signs of illness.

Habitat

The natural habitat of the Two-spot Bristletooth includes coral reefs and rocky substrates in the Indo-Pacific region. They are commonly found in areas with abundant algae growth, which they graze on continuously. Replicating these conditions in the aquarium will help ensure their health and well-being.