Potter's Angelfish

Centropyge potteri

Animalia›Chordata›Actinopterygii›Perciformes›Pomacanthidae

📍 Hawaiian Islands (endemic)

Endemic to Hawaii — a stunning mosaic of orange, blue, and black. Challenging to keep; demands pristine water, a well-established tank with abundant algae growth, and patient acclimation. Not reef-safe.

Size5"

Min Tank55g

semi-aggressive

Zonemid

Care Guide

Diet

Potter's Angelfish are omnivores with a strong preference for algae and vegetable matter. Feed high-quality marine flakes, small pellets, and dried seaweed or nori sheets daily. Supplement 2-3 times weekly with frozen mysis shrimp or brine shrimp to ensure balanced nutrition and encourage natural foraging behavior.

Behavior

A semi-aggressive species that becomes increasingly territorial with age, especially toward other angelfish and similar-sized fish. Most active during dawn and dusk, spending considerable time grazing on algae-covered surfaces and rockwork. Generally peaceful toward larger fish and invertebrates but may nip at soft corals and small crustaceans.

Breeding

Breeding Potter's Angelfish in captivity is extremely rare and poorly documented. Pair formation is unpredictable, and larvae are difficult to rear due to specialized dietary requirements. Home aquarium breeding is not recommended; wild-caught specimens are the norm in the hobby.

Tank Mates

Ocellaris Clownfish

Similar water requirements and reef-safe compatibility; may compete for space but generally coexist peacefully

good

Yellow Watchman Goby

Occupies different tank zones and has compatible salinity/temperature needs; minimal aggression risk

good

Cleaner Shrimp

May be nipped at despite cleaning benefits; monitor closely for aggression

caution

Flame Hawkfish

Both semi-aggressive; requires large tank with ample hiding spaces to minimize territorial conflicts

caution

Lawnmower Blenny

Shares algae-grazing niche; occupies lower water column and reduces competition for space

good

Common Diseases

Marine Ich (Cryptocaryon irritans)

Symptoms

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

Treatment

Quarantine immediately; raise temperature to 26-28°C, maintain pristine water quality, consider copper-based treatments or hyposalinity therapy (SG 1.009-1.012) under expert guidance

Head and Lateral Line Erosion (HLLE)

Symptoms

Pitting or erosion of head and lateral line, loss of sensory pores, darkened coloration

Treatment

Improve water quality, increase feeding frequency with varied diet rich in vitamins and HUFA, perform 25% weekly water changes, consider vitamin supplements

Bacterial Infection

Symptoms

Torn fins, open sores, cloudy eyes, behavioral lethargy, loss of appetite

Treatment

Quarantine affected fish, perform daily 50% water changes, maintain optimal water parameters, consider antibiotic treatment if severe

Parasitic Infection (Brooklynella, Uronema)

Symptoms

Excessive mucus coating, rapid gill movement, scratching behavior, white film on body

Treatment

Quarantine immediately, treat with formalin or copper-based medications following product instructions, maintain elevated temperature and pristine water quality