Common name: Gueze's butterflyfish

General information

The Mauritian Butterflyfish, scientifically known as Prognathodes guezei, is a rare and beautiful species of butterflyfish endemic to the waters around Mauritius and Réunion in the Indian Ocean. It is recognized by its distinctive coloration, featuring a yellow body with a broad, vertical white band behind the head and a smaller white band near the base of the tail. The snout is elongated, and the dorsal fin is adorned with a striking black and white pattern.

This species is not commonly found in the aquarium trade due to its rarity and the challenges associated with collecting fish from its natural habitat. However, for advanced hobbyists who manage to acquire a specimen, it can be a rewarding addition to a fish-only or reef aquarium with other peaceful species.

Care

Mauritian Butterflyfish require a well-established aquarium with plenty of hiding places and room to swim. They are not considered reef-safe as they may nip at stony and soft corals, as well as sessile invertebrates. A varied diet of meaty foods, including mysis shrimp, brine shrimp, and other finely chopped seafood, is essential for their health. It is also beneficial to supplement their diet with vitamins and other nutrients.

Reproduction

Little is known about the reproductive habits of Prognathodes guezei in the wild or in captivity. Like many butterflyfish, they are likely to form monogamous pairs and engage in elaborate courtship displays. Breeding them in the home aquarium is considered extremely challenging and has rarely been documented.

Habitat

The Mauritian Butterflyfish is typically found in clear, deep reef environments ranging from 30 to 150 meters. They prefer areas with abundant coral growth and steep drop-offs, where they can feed on a variety of benthic invertebrates and zooplankton.