Common name: Borbonius Anthias

General Information

The Borbonius Anthias (Odontanthias borbonius), also known as the Blotched Anthias or Checked Swallowtail, is a stunning and sought-after species in the aquarium trade. Its unique coloration, featuring a pale pink to yellow body adorned with irregular blotches of magenta or red, makes it a standout addition to any reef tank. This species is native to deeper reef environments in the Indo-Pacific, often found at depths of 50 to 200 meters, which contributes to its rarity in the hobby.

Borbonius Anthias are highly prized for their striking appearance and relatively peaceful temperament. They are a great choice for advanced aquarists looking to add a touch of elegance to their tanks. However, their deep-water origins mean they require specific care to thrive in captivity, including acclimation to bright lighting and stable water parameters.

Care

Borbonius Anthias are best suited for well-established reef tanks with plenty of live rock for hiding and exploration. Due to their deep-water habitat, they prefer dimmer lighting or shaded areas within the aquarium. Providing overhangs and caves can help replicate their natural environment and reduce stress.

These fish require stable water conditions and are sensitive to fluctuations in temperature, salinity, and pH. A high-quality protein skimmer and regular water changes are essential to maintain pristine water quality. They are not overly active swimmers but do appreciate moderate water flow that mimics the gentle currents of their natural habitat.

Diet and Feeding

In the wild, Borbonius Anthias are planktivores, feeding on zooplankton and other small organisms. In captivity, they should be offered a varied diet of high-quality frozen foods such as mysis shrimp, brine shrimp, and finely chopped seafood. Enriched foods and occasional feedings of live plankton can help maintain their vibrant coloration and overall health.

Feed them small portions two to three times daily to mimic their natural feeding habits. They may be shy feeders initially, so ensure food reaches them without being outcompeted by more aggressive tank mates.

Behavior and Compatibility

Borbonius Anthias are generally peaceful and can be kept in community reef tanks. They are best housed with other non-aggressive species, as they may become stressed by overly boisterous tank mates. While they can be kept singly, they are often more comfortable in small groups, provided the tank is large enough to accommodate their social dynamics.

These fish are not aggressive but may exhibit mild territorial behavior, especially during feeding. Providing ample hiding spots can help reduce any potential conflicts. They are reef-safe and will not harm corals or invertebrates, making them an excellent choice for mixed reef setups.

Health and Common Issues

Borbonius Anthias are relatively hardy once acclimated but can be prone to stress during transport and introduction to a new tank. Quarantining new specimens is highly recommended to monitor for signs of disease and ensure they are eating well before adding them to the main display.

Common health issues include marine ich and bacterial infections, often triggered by stress or poor water quality. Maintaining stable water parameters, a varied diet, and a stress-free environment are key to keeping them healthy. Regular observation and prompt treatment of any signs of illness are essential.

Habitat

In the wild, Borbonius Anthias inhabit deep reef slopes and drop-offs, often associating with coral outcroppings and rocky crevices. They are found in the Indo-Pacific region, including areas around Japan, the Philippines, and Indonesia. Their preference for deeper waters means they are adapted to cooler temperatures and lower light levels compared to many other reef fish.

Replicating these conditions in captivity involves providing shaded areas and maintaining stable water parameters. While they can adapt to brighter lighting over time, ensuring they have access to dimly lit zones within the tank is crucial for their comfort.