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The Passer Angelfish (Pomacanthus passer), also widely known as the King Angelfish, is a legendary and exceptionally robust marine species native to the tropical eastern Pacific Ocean. It features a deep, velvety midnight-blue body marked by a striking, vertical white bar running down behind its pectoral fin, a brilliant neon-yellow tail fin, and iridescent sapphire-blue trim framing its dorsal and anal fins. As a full-sized large angelfish, it undergoes an impressive visual transformation from its brightly striped juvenile phase into a massive, muscular adult with a highly commanding presence, making it an ultimate apex centerpiece for large marine aquariums.
Tank Requirements
Minimum Tank Size: 220 to 250 gallons or larger; because adults can grow up to a massive 12 to 14 inches and are exceptionally powerful, fast swimmers, a tank length of at least six to eight feet is mandatory to prevent severe stress and pacing.
Aquarium Decor: Colossal live rock formations built with highly secure, heavy arches and deep caves; it requires an incredibly stable rock structure, as its sheer muscular strength can easily dislodge loosely stacked aquascaping. High-capacity protein skimming is critical to handle its heavy bioload.
Temperature: 72°F – 78°F (22°C – 26°C).
Salinity (Specific Gravity): 1.020 – 1.025.
pH Range: 8.1 – 8.4.
Care and Feeding
Diet: Omnivore; possesses a voracious appetite and requires multiple daily feedings. Provide a heavy, varied rotation of frozen mysis shrimp, krill, chopped fresh clams, squid, and heavy quantities of dried marine algae sheets alongside specialized angelfish formulas containing natural sponge material.
Reef Safe Rating: Not reef safe; it is a highly destructive rock-picker that will aggressively shred and consume large polyp stony (LPS) corals, soft corals, zoanthids, polyps, and clam mantles. It belongs strictly in a large fish-only-with-live-rock (FOWLR) system.
Temperament: Aggressive; it is notoriously one of the most dominant, territorial, and bellicose species in the entire marine hobby. It will fiercely attack other angelfish, similarly shaped competitors, or any fish it perceives as a threat to its established territory, and it should absolutely be introduced as the final fish to a predatory or aggressive community system.
The Passer Angelfish (Pomacanthus passer), also widely known as the King Angelfish, is a legendary and exceptionally robust marine species native to the tropical eastern Pacific Ocean. It features a deep, velvety midnight-blue body marked by a striking, vertical white bar running down behind its pectoral fin, a brilliant neon-yellow tail fin, and iridescent sapphire-blue trim framing its dorsal and anal fins. As a full-sized large angelfish, it undergoes an impressive visual transformation from its brightly striped juvenile phase into a massive, muscular adult with a highly commanding presence, making it an ultimate apex centerpiece for large marine aquariums.
Tank Requirements
Minimum Tank Size: 220 to 250 gallons or larger; because adults can grow up to a massive 12 to 14 inches and are exceptionally powerful, fast swimmers, a tank length of at least six to eight feet is mandatory to prevent severe stress and pacing.
Aquarium Decor: Colossal live rock formations built with highly secure, heavy arches and deep caves; it requires an incredibly stable rock structure, as its sheer muscular strength can easily dislodge loosely stacked aquascaping. High-capacity protein skimming is critical to handle its heavy bioload.
Temperature: 72°F – 78°F (22°C – 26°C).
Salinity (Specific Gravity): 1.020 – 1.025.
pH Range: 8.1 – 8.4.
Care and Feeding
Diet: Omnivore; possesses a voracious appetite and requires multiple daily feedings. Provide a heavy, varied rotation of frozen mysis shrimp, krill, chopped fresh clams, squid, and heavy quantities of dried marine algae sheets alongside specialized angelfish formulas containing natural sponge material.
Reef Safe Rating: Not reef safe; it is a highly destructive rock-picker that will aggressively shred and consume large polyp stony (LPS) corals, soft corals, zoanthids, polyps, and clam mantles. It belongs strictly in a large fish-only-with-live-rock (FOWLR) system.
Temperament: Aggressive; it is notoriously one of the most dominant, territorial, and bellicose species in the entire marine hobby. It will fiercely attack other angelfish, similarly shaped competitors, or any fish it perceives as a threat to its established territory, and it should absolutely be introduced as the final fish to a predatory or aggressive community system.