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The Annularis Angelfish, also known as the Blue Ring Angelfish, is a classic large angelfish admired for its deep blue body, electric blue ring markings, and elegant yellow highlights along the fins. As it matures, this species develops richer coloration and stronger contrast, making it a commanding centerpiece in large marine display aquariums.
Native to Indo-Pacific reefs, the Annularis Angelfish is intelligent, active, and highly aware of its surroundings. Like most large Pomacanthus angels, it is not considered reef-safe but excels in fish-only or FOWLR systems where its full personality and beauty can be appreciated. With proper care, stable water quality, and a varied diet, this species is hardy and long-lived.
This angelfish is best suited for experienced aquarists with large, established systems who are looking for a bold, iconic show fish.
Scientific Name: Pomacanthus annularis
Common Name: Annularis Angelfish / Blue Ring Angelfish
Care Level: Advanced
Temperament: Semi-Aggressive
Reef Safe: No
Minimum Tank Size: 180 gallons
Adult Size: Up to 18 inches
Diet: Omnivore (sponge-based angelfish foods, algae, frozen meaty foods, high-quality pellets)
Feeding Frequency: 1–2 times daily
Lighting Requirement: Moderate
Water Flow: Moderate to Strong
Temperature: 72–78°F
Salinity: 1.024–1.026 SG
pH: 8.1–8.4
Origin: Indo-Pacific
Compatibility Notes: Best housed with other large, semi-aggressive fish; avoid small, timid species.
Special Requirements: Requires ample swimming space and stable water parameters for long-term success.
The Annularis Angelfish, also known as the Blue Ring Angelfish, is a classic large angelfish admired for its deep blue body, electric blue ring markings, and elegant yellow highlights along the fins. As it matures, this species develops richer coloration and stronger contrast, making it a commanding centerpiece in large marine display aquariums.
Native to Indo-Pacific reefs, the Annularis Angelfish is intelligent, active, and highly aware of its surroundings. Like most large Pomacanthus angels, it is not considered reef-safe but excels in fish-only or FOWLR systems where its full personality and beauty can be appreciated. With proper care, stable water quality, and a varied diet, this species is hardy and long-lived.
This angelfish is best suited for experienced aquarists with large, established systems who are looking for a bold, iconic show fish.
Scientific Name: Pomacanthus annularis
Common Name: Annularis Angelfish / Blue Ring Angelfish
Care Level: Advanced
Temperament: Semi-Aggressive
Reef Safe: No
Minimum Tank Size: 180 gallons
Adult Size: Up to 18 inches
Diet: Omnivore (sponge-based angelfish foods, algae, frozen meaty foods, high-quality pellets)
Feeding Frequency: 1–2 times daily
Lighting Requirement: Moderate
Water Flow: Moderate to Strong
Temperature: 72–78°F
Salinity: 1.024–1.026 SG
pH: 8.1–8.4
Origin: Indo-Pacific
Compatibility Notes: Best housed with other large, semi-aggressive fish; avoid small, timid species.
Special Requirements: Requires ample swimming space and stable water parameters for long-term success.