
Chaetodontoplus septentrionalis
Family: Pomacanthidae ยท Large Angelfish
Also known as: Bluestriped Angelfish, Bluelined Angelfish, Northern Angelfish
The Bluestriped Angel is a rare and exceptionally beautiful angelfish from the temperate and subtropical waters of the Western Pacific, primarily collected from Japanese waters. It features a dark brown to black body adorned with numerous thin horizontal blue stripes that run the length of the body, creating a stunning visual effect. The face often shows yellow-orange tones, and the dorsal and anal fins are edged in bright blue. This species is highly coveted by serious angelfish collectors due to its rarity and striking appearance.
As a member of the Chaetodontoplus genus, the Bluestriped Angel tends to be less aggressive than the larger Pomacanthus or Holacanthus species, though it can still be territorial toward conspecifics and similarly shaped fish. It requires excellent water quality and a well-established aquarium with plenty of live rock providing both grazing surfaces and hiding spots. New imports can be delicate and may take time to acclimate to captive foods.
This species is considered an expert-level fish due to its high price, collection challenges, and initial acclimation difficulties. Once established, however, the Bluestriped Angel becomes a hardy and long-lived aquarium inhabitant. It is not considered reef-safe as it may nip at coral polyps and clam mantles. A 125-gallon aquarium is the minimum recommendation, and pristine water conditions must be maintained at all times.
Bluestriped Angels are omnivores that feed on sponges, tunicates, algae, and small invertebrates in the wild. In captivity, offer high-quality angelfish preparations with marine sponge, frozen mysis shrimp, enriched brine shrimp, Spirulina, and nori seaweed. Newly imported specimens may require live foods to initiate feeding. Feed two to three times daily.
The Bluestriped Angel is semi-aggressive and territorial toward conspecifics and other angelfish. It does best with dissimilar tankmates such as tangs, wrasses, and other non-angelfish species. Only one specimen per tank unless the system is very large. Not reef-safe. Avoid housing with overly aggressive tankmates that might stress this sensitive species.
Check CompatibilityBluestriped Angels have not been bred in home aquariums. Like other Chaetodontoplus species, they are likely haremic in the wild with one male maintaining a territory with several females. The rarity of this species in captivity makes breeding attempts extremely uncommon.