Majestic Angelfish

The Majestic Angelfish (Pomacanthus navarchus), also commonly known as the Blue-Girdled Angelfish, is one of the most stunning and prized large marine angelfish in the saltwater aquarium hobby. 1. Appearance & Coloration Adults: They feature a deep royal blue body overlaid with vibrant electric blue-girdled stripes, a bright orange-yellow face and lower back, and contrasting dark markings. Juveniles: Unlike many other Pomacanthus angels that undergo a stark transformation, juveniles feature similar electric blue and yellow tones, though the pattern shifts as they mature. Size: They typically grow to about 10 to 12 inches in captivity and can live for decades with proper care. 2. Tank Requirements Minimum Tank Size: An adult requires at least a 180-gallon aquarium (with a 6-foot footprint preferred) to accommodate their active cruising habits and prevent stress or glass pacing. Water Parameters: Temperature: 72°F – 78°F (22°C – 26°C) Salinity (Specific Gravity): 1.020 – 1.025 pH: 8.1 – 8.4 Water Quality: They demand pristine, stable water conditions and do poorly in systems with high nitrates. A robust protein skimmer and efficient filtration are a must. Aquascaping: Provide plenty of mature live rock arranged into caves, overhangs, and visual barriers to make them feel secure and give them natural grazing areas. 3. Diet & Feeding Natural Diet: In the wild, they feed heavily on sponges, tunicates, and algae. Captive Diet: They need a varied omnivorous diet that includes marine algae/nori, high-quality angelfish preparations containing sponge material, mysis shrimp, and chopped meaty foods like clam or krill. Feeding Frequency: Feed small portions multiple times a day, especially when first introduced, to keep their colors vibrant and prevent nutritional stress. 4. Reef Compatibility Status: "With Caution" (Generally Not Considered Safe for Reefs) Behavior: While some hobbyists have success keeping them in mixed reefs, they have a tendency to nip at LPS corals, soft corals, and giant clam mantles. They generally leave SPS corals alone, but their natural urge to graze can occasionally cause trouble in coral-heavy displays. 5. Temperament & Tank Mates Temperament: Semi-aggressive. They can be shy and easily stressed when first added, but become more confident and assertive as they settle in. Compatibility: Best kept as the sole angelfish in a system, as they will typically fight with other members of the same species or similar large angels. They do well alongside other robust, semi-aggressive fish like large tangs, wrasses, and dottybacks. Introduction: It is usually best to introduce them as the last fish in the system, utilizing an acclimation box to help them establish their place without immediate harassment from existing tank bosses.