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The Asfur Angelfish (Pomacanthus asfur), also known as the Arabian Angelfish or Crescent Angelfish, is a legendary and breathtaking marine species native to the vibrant coral reefs of the Red Sea and Gulf of Aden. It features a deep, velvety midnight-blue body accented by a brilliant, neon-yellow crescent band slicing vertically through its midsection and a matching, bright yellow tail fin. Highly prized by advanced aquarists for its rich color contrast, this full-sized large angelfish is notoriously hardy once acclimated, though it requires specific territorial planning to manage its natural shyness and assertive adult behavior.
Tank Requirements
Minimum Tank Size: 150 to 180 gallons or larger; demands a lengthy tank footprint to accommodate its active pacing and minimize stress-induced behaviors.
Aquarium Decor: Massive live rock layouts engineered with large caves, dark overhangs, and hidden tunnels. It is a reclusive species that requires heavy structural cover to feel secure enough to swim regularly in open water.
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; requires a premium, varied diet to protect its deep blue and yellow coloration. Feed multiple small portions daily of frozen mysis shrimp, chopped fresh clams, krill, spirulina flakes, and specialized marine angelfish formulas containing natural sponge material.
Reef Safe Rating: Not reef safe; it is a dedicated rock picker that will relentlessly nip at large polyp stony (LPS) corals, soft leather corals, zoanthids, and clam mantles. It belongs strictly in a fish-only-with-live-rock (FOWLR) system.
Temperament: Semi-aggressive to aggressive; can be incredibly timid and reclusive during its introduction phase, but will transform into a highly territorial tank boss once established. It will fight fiercely with other large angelfish—especially its close relative, the Maculosus Angelfish—and should be the final fish added to the aquarium.
The Asfur Angelfish (Pomacanthus asfur), also known as the Arabian Angelfish or Crescent Angelfish, is a legendary and breathtaking marine species native to the vibrant coral reefs of the Red Sea and Gulf of Aden. It features a deep, velvety midnight-blue body accented by a brilliant, neon-yellow crescent band slicing vertically through its midsection and a matching, bright yellow tail fin. Highly prized by advanced aquarists for its rich color contrast, this full-sized large angelfish is notoriously hardy once acclimated, though it requires specific territorial planning to manage its natural shyness and assertive adult behavior.
Tank Requirements
Minimum Tank Size: 150 to 180 gallons or larger; demands a lengthy tank footprint to accommodate its active pacing and minimize stress-induced behaviors.
Aquarium Decor: Massive live rock layouts engineered with large caves, dark overhangs, and hidden tunnels. It is a reclusive species that requires heavy structural cover to feel secure enough to swim regularly in open water.
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; requires a premium, varied diet to protect its deep blue and yellow coloration. Feed multiple small portions daily of frozen mysis shrimp, chopped fresh clams, krill, spirulina flakes, and specialized marine angelfish formulas containing natural sponge material.
Reef Safe Rating: Not reef safe; it is a dedicated rock picker that will relentlessly nip at large polyp stony (LPS) corals, soft leather corals, zoanthids, and clam mantles. It belongs strictly in a fish-only-with-live-rock (FOWLR) system.
Temperament: Semi-aggressive to aggressive; can be incredibly timid and reclusive during its introduction phase, but will transform into a highly territorial tank boss once established. It will fight fiercely with other large angelfish—especially its close relative, the Maculosus Angelfish—and should be the final fish added to the aquarium.