The Potter’s Angelfish (Centropyge potteri), also known as the Russet Angelfish, is a captivating marine species endemic to the Hawaiian Islands and Johnston Atoll. Renowned for its vibrant coloration and unique patterns, it is a cherished addition among marine aquarists.
Key Information
• Small fish safe: Yes
• Small invert safe: ⚠️ With caution
• Coral safe: ⚠️ With caution
• Minimum tank size: 113 liters (30 gallons)
• Adult size: Up to 10 cm (4 inches)
• Diet: Omnivorous, primarily feeding on algae and detritus; may also accept mysis shrimp, brine shrimp, and high-quality angelfish preparations.
• Be aware of: May nip at corals and clam mantles; requires a well-established tank with ample live rock for grazing and hiding; can be shy and should be housed with peaceful tank mates.
Appearance and Coloration
The Potter’s Angelfish is distinguished by its striking coloration:
• Body: A bright rusty orange hue adorned with intricate blue lines that create a marbled effect.
• Fins: The posterior portions of the dorsal and anal fins, as well as the caudal fin, exhibit a dark blue-black coloration.
The intensity and distribution of blue markings can vary among individuals, with some displaying more pronounced blue areas.
Natural Habitat and Behavior
In their natural environment, Potter’s Angelfish inhabit reef slopes, rocky ledges, and rubble areas in clear waters at depths ranging from 3 to 46 meters (10 to 150 feet). They are typically solitary and exhibit territorial behavior, often staying close to coral crevices which provide shelter and feeding grounds. These fish are diurnal, spending daylight hours foraging and remaining inactive at night within the safety of the reef structures.
Tank Requirements and Water Parameters
To ensure the well-being of the Potter’s Angelfish in captivity:
• Minimum Tank Size: A 30-gallon (113 liters) aquarium is recommended to provide sufficient space for swimming and territory establishment.
• Water Parameters:
• Temperature: 22°C – 27°C (72°F – 80°F)
• pH: 8.1 – 8.4
• Specific Gravity: 1.020 – 1.025
• Aquascaping: Incorporate ample live rock to create hiding spots and grazing areas, mimicking their natural reef habitat.
• Lighting: Moderate lighting is suitable.
• Water Movement: Moderate flow to simulate their natural environment.
Maintaining stable water conditions and high water quality is crucial for their health. A mature, well-established aquarium with abundant live rock will support their natural grazing behavior and provide necessary shelter.
Diet and Feeding
Potter’s Angelfish are omnivorous, with a diet that includes both plant and animal matter:
• Diet: Offer a varied diet consisting of:
• Marine algae and spirulina
• Mysis shrimp
• Brine shrimp
• High-quality angelfish preparations
• Feeding Frequency: Feed small amounts multiple times daily to meet their nutritional needs.
Providing ample live rock will allow natural grazing behavior, which is beneficial for their health and well-being. Initially, they may be shy and reluctant to eat; offering live or frozen foods can encourage feeding until they become accustomed to prepared foods.
Compatibility and Social Structure
Potter’s Angelfish can exhibit territorial behavior, especially towards conspecifics and similar species:
• Social Structure: Best kept singly unless in a very large aquarium where multiple individuals can establish territories.
• Temperament: Generally peaceful towards other species but may become aggressive towards similar-looking fish.
• Compatible Tank Mates: Suitable companions include peaceful community fish such as gobies, blennies, and wrasses. Caution is advised when housing with other angelfish or species with similar coloration.
Observing their interactions and providing ample space can help mitigate aggressive behaviors. Due to their shy nature, they should be housed with non-aggressive tank mates to prevent stress.
Important Considerations
• Reef Compatibility: While often considered reef-safe, individual specimens may nip at corals and clam mantles. Monitoring their behavior is essential, especially in reef setups.
• Acclimation: They may be shy upon introduction but typically become more confident over time.
• Health: Ensure a varied diet and stable water conditions to prevent common health issues.
With proper care and attention to their specific needs, Potter’s Angelfish can be a vibrant and rewarding addition to a marine aquarium.