Common name: Southern Scythe Butterflyfish

General Information

The Southern Scythe Butterflyfish, scientifically known as Prognathodes carlhubbsi, is a striking species that captures the attention of aquarists with its bold black banding that, with some imagination, is similar to the shape of a scythe. This species is less commonly found in the aquarium trade compared to other butterflyfish. Its unique appearance and rarity make it a prized addition for experienced hobbyists seeking to diversify their collections.

Very similar to Prognathodes falcifer, they can be easily distinguished by their snout band. In P. carlhubbsi, the dark band on the snout is black, whereas in P. falcifer, it is pale gray to yellow. While both are found in the Eastern Pacific, they differ in geographic distribution which is sometimes reflected in their common name.

While not as widely recognized as some of its butterflyfish relatives, Prognathodes carlhubbsi plays a significant role in the marine ecosystem, often found in deeper reef environments. Its presence in the aquarium trade is limited, primarily due to its specific habitat preferences and the challenges associated with its collection.

Care

Caring for the Scythe Butterflyfish requires a well-established marine aquarium with plenty of live rock and hiding spots. This species thrives in tanks that mimic its natural deep reef habitat, with subdued lighting and stable water conditions. Due to its specialized care requirements, it is best suited for advanced aquarists who can maintain a consistent environment.

Diet and Feeding

In the wild, Prognathodes carlhubbsi feeds on small invertebrates and coral polyps. In captivity, it requires a varied diet that includes high-quality frozen foods such as mysis shrimp, brine shrimp, and finely chopped seafood. Offering a mix of foods helps to ensure nutritional balance and encourages natural foraging behavior.

Behavior and Compatibility

The Scythe Butterflyfish is generally peaceful but can be shy, especially when first introduced to a new environment. It is best kept with other non-aggressive species and should be provided with plenty of hiding places to retreat to if needed. While not aggressive, it may nip at coral polyps, so caution is advised when housing it in a reef tank.

Health and Common Issues

Maintaining good water quality and a stress-free environment is crucial for the health of Prognathodes carlhubbsi. Like many marine species, it can be susceptible to common ailments such as ich and marine velvet. Regular monitoring and prompt treatment of any health issues are essential to ensure its well-being.

Habitat

Naturally found in the deeper reef environments of the Eastern Pacific, particularly around the Galápagos Islands and Cocos Island, the Scythe Butterflyfish prefers habitats with rocky substrates and abundant coral growth. These environments provide the necessary cover and feeding opportunities for this species.