Pomacanthus annularis
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The Annularis Angelfish (Pomacanthus annularis), also known as the Blue Ring Angel, is a commanding showpiece with electric sapphire rings over a copper-gold body and flowing tail streamers. Juveniles display tighter ring patterns that broaden and glow as they mature, making this species a joy to watch over time. Expect a confident, semi-aggressive personality that thrives as the centerpiece of a large, mature display with ample rockwork, arches, and shady retreats.
The Annularis Angelfish reaching around 12″ as an adult, thrives as a centerpiece in a large, mature aquarium—aim for 250+ gallons with a long footprint, open swim lanes, and plenty of established live rock forming arches and caves for grazing and security. Keep conditions stable: 76–80°F, 1.024–1.026 specific gravity, pH 8.1–8.4, alkalinity 8–11 dKH, nitrate under 20 ppm, and phosphate under 0.1 ppm, supported by strong protein skimming and periodic fresh carbon. Semi-aggressive by nature, it pairs best with robust tankmates and is not reef-safe, as it commonly nips LPS, zoanthids, and clams; other large angels should only be attempted in very large systems and added carefully.
The Annularis Angelfish should be offered small, frequent feedings centered on angelfish formulas that include marine sponge, along with mysis, chopped shrimp and clam, spirulina, high-quality pellets, and sheets of nori several times per week; new or juvenile fish do best with 2–3 feedings daily, then at least twice daily once established.