The Blue Ring Angelfish is a stunning marine fish known for its vibrant blue ring behind the gill cover and ornate body stripes. It is admired in the aquarium trade but demands specific care and spacious tanks due to its size and behavior.
Scientific Name
Pomacanthus annularis
Habitat
Found in tropical Indo-Pacific coral reefs, lagoons, and outer reef slopes.
Conservation
Not listed as endangered; however, habitat degradation and over-collection pose potential threats.
Lifespan
10–15 years in captivity with optimal care.
Fun Fact
Blue Ring Angelfish are born female and can later change to male – a trait called protogynous hermaphroditism.
Diet
Omnivorous – feeds on sponges, tunicates, algae, and small invertebrates. In aquariums, requires a diet including algae-based and spongiform-rich foods, mysis shrimp, and chopped seafood.
Average Size
Up to 40 cm (16 inches).
Location / Placement info
Displayed in the Coastal Reef Exhibit, near the Ocean-View Tunnel
FAQ
What is the lifespan of the Blue Ring Angelfish?
Blue Ring Angelfish can live up to 15–20 years in captivity with proper care.
What do Blue Ring Angelfish eat?
They are omnivores and feed on sponges, tunicates, algae, and marine-based prepared foods.
Are Blue Ring Angelfish aggressive?
They are semi-aggressive, especially toward other angelfish or similar-shaped species.
What is the ideal tank size for Blue Ring Angelfish?
A minimum of 180 gallons is recommended due to their large size and territorial behavior.
Do Blue Ring Angelfish need a reef environment to survive?
No, they do best in fish-only or FOWLR tanks, as they may nip at corals.
How big do Blue Ring Angelfish grow?
They can grow up to 12–18 inches (30–45 cm) in length.
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