Common name: Bicolor Butterflyfish

General Information

The Bicolor Butterflyfish, scientifically known as Prognathodes dichrous, is a captivating species that adds a splash of color to any aquarium. With its striking brown and white coloration, this fish is a true showstopper. Although not as commonly seen in the aquarium trade as some other butterflyfish, it is highly sought after by enthusiasts for its unique appearance and relatively peaceful demeanor.

This species is native to the deep reefs of the southeastern Atlantic Ocean, around the Ascension and Saint Helena islands. Its deep-water habitat makes it a rare find in the pet trade, contributing to its allure among collectors and advanced hobbyists.

Care

Caring for the Bicolor Butterflyfish requires some experience, as it is sensitive to changes in water quality and requires a well-established tank. It thrives in aquariums that mimic its natural deep reef environment, with plenty of live rock for grazing and hiding. A tank of at least 300 liters (80 gallons) is recommended to provide ample space for swimming and exploration.

Diet and Feeding

In the wild, the Bicolor Butterflyfish feeds primarily on sponges and tunicates. In captivity, it should be offered a varied diet that includes sponge-based foods, mysis shrimp, and finely chopped seafood. Feeding should occur two to three times daily to ensure proper nutrition and health.

Behavior and Compatibility

The Bicolor Butterflyfish is generally peaceful but can be territorial towards its own kind. It is best kept as a solitary specimen or in a well-planned community tank with other non-aggressive species. Due to its specialized diet, it is not considered reef-safe, as it may nip at coral polyps and other invertebrates.

Health and Common Issues

Maintaining stable water conditions and providing a diet rich in sponges are crucial for the health of the Bicolor Butterflyfish. It is susceptible to common marine diseases such as ich and should be monitored closely for signs of stress or illness. Regular water changes and a well-maintained filtration system can help prevent health issues.

Habitat

The natural habitat of the Bicolor Butterflyfish includes deep coral reefs, where it can be found at depths ranging from 15 to 50 meters (50 to 165 feet). These environments are characterized by clear, warm waters and an abundance of sponges and other invertebrates, which form the basis of its diet.