Pearl Butterflyfish (Roa excelsa)

Fish in the family Chaetodontidae. Expert care. Reef Safe with Caution.

Pearl Butterflyfish

Quick facts

Scientific nameRoa excelsa
FamilyChaetodontidae
Care levelExpert
Reef safetyReef Safe with Caution
TemperamentPeaceful
Dietomnivore
Adult size6 in
Minimum tank size200 gallons
Water parametersTemperature: 75-80°F (24-27°C) pH: 8.0-8.4 Salinity: 1.021-1.025
Feeding scheduleFeed 2-3 times daily

Appearance

Roa excelsa has an elongated, slender body, reaching up to 150 cm in length. It is primarily silver-gray in color, with a series of distinct black spots along its flanks. A unique feature is the presence of a wide, dark band across its upper caudal (tail) fin.

Diet and feeding

Zooplankton, small crustaceans (such as mysid shrimp), and fish eggs in both wild and aquarium environments.

Difficulty and care for the Pearl Butterflyfish

Moderate - Requires some experience due to specific dietary water or tank requirements. Best suited for intermediate aquarists.

Common health issues

Marine ich, Fin rot, Swim bladder disorder, Columnaris disease, Velvet disease

Origin and habitat

Roa excelsa is naturally found in the coastal waters of Western Australia, specifically within the Indian Ocean, primarily along the Ningaloo Reef and Coral Bay regions. The depth range for this species is typically between 10 to 45 meters.

Log Pearl Butterflyfish in your reef tank

Reef Trak gives you the full record on every species in your tank: acquisition date, source, photos, parameters at time of stocking, and links to maintenance and feeding events. Track Pearl Butterflyfish alongside everything else in your reef.