Bluespotted angelfish
Chaetodontoplus caeruleopunctatus
The Bluespotted angelfish features a vibrant yellow body adorned with distinctive blue spots and a prominent, elongated dorsal fin.
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About the Bluespotted angelfish
A medium Pomacanthid from the Philippines, it has a dusky body dusted with tiny electric-blue spots and a yellow tail. In the wild it browses sponges and tunicates on deeper reefs, so it thrives only in mature tanks with lots of live rock and frequent feedings.
Also known as
Quick Facts
Size
8 inches (20 cm)
Temperament
Semi-aggressive
Difficulty
Advanced
Min Tank Size
125 gallons
Lifespan
10-15 years
Origin
Western Pacific - Philippines
Diet
Spongivore-omnivore - sponge-based angelfish diets, marine algae, mysis and shrimp
Water Parameters
22.2-25.6°C
8-8.4
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This species needs 22.2-25.6°C in a 125 gallon tank. Use our heater calculator to find the right wattage.
Calculate heater sizeCare Notes
- Start with at least a 125-gallon marine tank and pack it with mature live rock arranged into caves and shaded overhangs for browsing.
- Keep temperature at 22.2-25.6 C and pH 8.0-8.4, and avoid swings.
- Feed small, frequent meals centered on sponge-based angelfish diets, with added marine algae, mysis, and shrimp.
- This species is semi-aggressive; in most home systems it does best as the only angelfish, with tankmates that are sturdy but not bullies.
- Reef caution: it feeds on sponges and tunicates and will nip corals and clam mantles, so plan for fish-only or very carefully chosen corals.
- Quarantine new arrivals and confirm they are taking the sponge-heavy foods before moving them to the display.
- With solid care it can live 10-15 years, so keep up the frequent feedings and rockwork for constant grazing.
Compatibility
Good Tankmates
- Robust tangs like Zebrasoma and Ctenochaetus (yellow, scopas, kole) that can hold their own and share a large tank
- Active wrasses such as Halichoeres plus fairy and flasher wrasses (Cirrhilabrus, Paracheilinus) that are quick and not easily bullied
- Rabbitfish/foxfaces (Siganus) - peaceful, similarly sized grazers that ignore the angelfish
- Larger, hardy clownfish pairs (Amphiprion) that can stand up for themselves
- Hawkfish (Cirrhitidae) - perchers with attitude that usually coexist well in roomy systems
- Moderate, similarly sized butterflyfish (Chaetodon, Forcipiger) introduced carefully in a large, mature tank
Avoid
- Other large angelfish, especially Chaetodontoplus or similar-shaped Pomacanthids that will compete and fight
- Highly aggressive species like triggers (Balistapus, Rhinecanthus), big damsels, large dottybacks, or mean maroon clownfish
- Small, timid, or slow feeders such as firefish, tiny gobies, seahorses, or pipefish that get harassed or outcompeted
- Boisterous, pugnacious wrasses like Thalassoma or large Coris that may harass and outcompete at feeding time
Bluespotted angelfish (Chaetodontoplus caeruleopunctatus) is a medium marine angelfish from the Philippines. Adults reach about 8 inches (20 cm) and show a dusky body dusted with tiny electric-blue spots and a yellow tail. It is a demanding species best left to experienced keepers.
Natural range and habitat
This species is found in the western Pacific around the Philippines. It frequents deeper reef areas where it browses sponges and tunicates on the rock faces. That constant grazing lifestyle translates to aquarium needs: mature systems with abundant live rock for picking and secure retreats.
Aquarium setup and water conditions
Provide at least 125 US gallons with heavy, well-established live rock arranged to create ledges and caves. Stability matters more than anything: this fish fares poorly in new tanks without established growth on the rock.
- Temperature: 22.2-25.6 C
- pH: 8.0-8.4
- Water: marine, stable and well-oxygenated
- Aquascape: lots of live rock for continuous browsing and shelter
Advanced species: it thrives only in mature tanks with ample live rock and frequent feedings. Skip this fish for brand-new setups.
Diet and feeding
A spongivore-omnivore that needs sponge-rich foods to maintain condition. Offer a varied rotation and feed often rather than in one large meal.
- Sponge-based angelfish diets (frozen or formulated pellets)
- Marine algae and nori
- Mysis and shrimp
Look for individuals already taking prepared foods, then keep them on a varied, frequent feeding schedule. Watch body weight closely; underfed fish decline quickly.
Behaviour and tankmates
Semi-aggressive. In a spacious tank it usually coexists with robust, similarly sized fishes, but it can bully smaller or timid species. It may browse sessile invertebrates, especially sponges and tunicates, so plan accordingly if you keep decorative sponges or similar filter feeders.
Housing more than one angelfish often leads to disputes; most keep a single Bluespotted angelfish per tank unless working with very large systems and significant experience.
Common problems and how to avoid them
- Starvation in immature tanks: add only to mature systems with established live rock and natural growth.
- Nutritional gaps: rely on sponge-based angelfish foods and varied marine fare; do not feed only shrimp or mysis.
- Stress from cramped quarters: respect the 125-gallon minimum and provide multiple hiding spots to break line of sight.
- Incompatibility with sessile invertebrates: expect browsing on sponges and tunicates.
Lifespan in aquaria can reach 10-15 years with stable water quality, a mature environment, and a diet that includes sponge-based foods.
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