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Queen Angelfish

Holacanthus ciliaris

AnimaliaChordataActinopterygiiPerciformesPomacanthidae

📍 Caribbean & Western Atlantic

Ask Finn

Considered the most beautiful large angelfish. Iridescent blue-yellow body with a distinctive electric-blue 'crown' spot on the forehead. Wild-caught specimens are stubborn to wean onto captive foods. Sponge specialist.

Size18"
Min Tank250g
semi-aggressive
Zonemid

Care Guide

Diet

Queen Angelfish are specialized sponge-eaters in the wild and require a varied omnivorous diet in captivity. Offer high-quality marine flakes, pellets, frozen mysis shrimp, brine shrimp, and spirulina-based foods once daily. Wild-caught specimens are notoriously difficult to wean and may require live sponge, tunicates, or specialized preparations; captive-bred individuals adapt more readily to prepared foods.

Behavior

Queen Angelfish are semi-aggressive, territorial fish that patrol mid-water zones and reef structures. They are curious and intelligent but become increasingly aggressive with age and toward smaller fish or invertebrates. Solitary or paired specimens are recommended; they may harass other angelfish species and will consume small crustaceans and soft corals.

Breeding

Breeding Queen Angelfish in captivity is extremely rare and difficult. They form monogamous pairs in the wild and require very large tanks (500+ gallons) with specific environmental triggers. Larval rearing is complex and rarely successful in home aquaria; most captive specimens are wild-caught.

Common Diseases

Ich (Marine Velvet)

Symptoms

White spots on body and fins, rapid breathing, lethargy, flashing against surfaces

Treatment

Raise temperature to 28-29°C, use copper-based or formalin treatments; quarantine affected fish; maintain excellent water quality

Head and Lateral Line Erosion (HLLE)

Symptoms

Pitting or erosion of head and lateral line, loss of pigmentation in affected areas

Treatment

Improve diet with vitamin-enriched foods, frozen foods, and varied nutrition; ensure stable water parameters; may be linked to poor nutrition or stress

Bacterial Infections

Symptoms

Fin rot, open sores, cloudy eyes, behavioral changes, loss of appetite

Treatment

Quarantine fish, perform water changes, use antibiotic treatments (e.g., kanamycin or tetracycline); maintain pristine water quality

Parasitic Infections

Symptoms

Excessive scratching, visible parasites, weight loss, labored breathing

Treatment

Freshwater dips (brief, 5-10 minutes), copper treatments, or formalin; quarantine; treat main tank if necessary

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Quick Facts

pH
8.1–8.4
diet
omnivore/sponge
maxSize
18 inches
salinity
SG 1.020–1.025
minTankSize
250 gallons
temperature
73–82°F (23–28°C)

Temperature

73–82°F

23–28°C

Stats

Community tips0
Kept by0 hobbyists