Common name: Orangemargin Butteflyfish

General Information

The Orangemargin Butterflyfish or Pete Basabe’s Butteflyfish, scientifically known as Prognathodes basabei (Orangemargin Butterflyfish), is a rare and striking species named in honor of Peter K. Basabe that has captured the fascination of marine enthusiasts. This deep-water angelfish is distinguished by its unique coloration and elusive nature, making it a prized specimen for advanced aquarists and public aquariums.

Discovered in the mesophotic coral ecosystems of the Hawaiian Islands, the Orangemargin Butterflyfish is not commonly found in the pet trade due to its deep habitat and the challenges associated with its collection. Its rarity and beauty make it a symbol of the rich biodiversity found in deep coral reefs.

Care

Due to its deep-water origins, the Orangemargin Butterflyfish requires specific care conditions that mimic its natural environment. It thrives in aquariums with cooler water temperatures and subdued lighting, replicating the dimly lit habitats it naturally inhabits. A well-established tank with plenty of live rock for grazing and hiding is essential for its well-being.

This species is best suited for experienced aquarists who can provide the specialized care it needs. Regular monitoring of water parameters and maintaining stable conditions are crucial to its health.

Diet and Feeding

The Orangemargin Butterflyfish is an omnivore, feeding on a variety of foods in its natural habitat, including sponges, tunicates, and small invertebrates. In captivity, it should be offered a varied diet that includes high-quality marine pellets, frozen mysis shrimp, and finely chopped seafood.

Feeding should be done once or twice daily, ensuring that the fish receives adequate nutrition to maintain its vibrant coloration and health.

Behavior and Compatibility

Orangemargin Butterflyfish are generally peaceful but can be shy, especially when first introduced to a new environment. They prefer a tranquil setting and may become stressed in overly active or aggressive community tanks.

They are best kept singly or in pairs, as they can be territorial towards conspecifics. Compatibility with other species should be considered carefully, avoiding aggressive tank mates that might outcompete them for food.

Reproduction

Little is known about the breeding habits of the Orangemargin Butterflyfish in captivity, and successful breeding has not been documented. Their deep-water habitat poses challenges for reproduction in home aquariums.

Health and Common Issues

The Orangemargin Butterflyfish can live for several years with proper care. Ensuring a stable environment and a balanced diet is key to preventing common health issues. Regular observation for signs of stress or illness, such as changes in behavior or appetite, is important.

Due to their rarity, acquiring a healthy specimen from a reputable source is crucial. Look for active individuals with clear eyes and intact fins.

Habitat

The Orangemargin Butterflyfish is native to the mesophotic coral ecosystems of the Hawaiian Islands, typically found at depths ranging from 50 to 200 meters (165 to 650 feet). These environments are characterized by cooler temperatures and low light levels, which should be replicated in captivity to ensure the fish's health and well-being.