Species name: Pomacanthus annularis
Common names: Bluering angelfish, Annularis Angelfish
Family: Pomacanthidae (Angelfishes)
Order: Perciformes (perch-likes)
Class: Actinopterygii (ray-finned fishes)
Maximum length: 17.7 in.
Minimum tank size: 80 gallons
Aggressiveness: semi-aggressive. The Bluering angelfish is very territorial, so only one should be kept in an aquarium and it should not be kept with other angelfish. Should be introduced last in a community tank.
Reef Compatibility: With caution. Will nip at sessile invertebrates such as nudibranchs, corals, and clams.
Distribution: Indo-West Pacific: East coast of Africa, throughout Indonesia and New Guinea to New Caledonia, north to southern Japan. Specimens for the aquarium trade are mostly from Sri Lanka.
Diet: In the wild, the Bluering angelfish feeds on algae, sponges, zooplankton, coral polyps, shrimps, and shellfish. Can be offered Julian Sprungs Sea Veggies, Ocean Nutrition Seaweed Selects, high-quality sponge based food, angelfish food preparations containing spongiform products, spirulina flakes, chopped fresh and frozen crustaceans, shellfish, squid.
When first introduced, it may need to be offered live foods such as brine shrimp to entice it to eat. Should be fed several times per day,
Photo 1: Adult Photo 2: Juvenile
Image from wikimedia.org
The Blueringed Angelfish inhabit coral reefs of the Indo-West Pacific where it is commonly seen around caves, wrecks or jetties, and murky water. It is usually seen in pairs or as a solitary individual at depth of 5 to 200 feet.
Juveniles and adults look quite different. Juveniles are black with alternating white and blue curved stripes on the sides and are often confused with the Goldtailed Angelfish, Pomacnathus chrysurus. Goldtailed Angelfish are distinguished by their yellow caudal fin while Bluering Angelfish are distinguished by their white caudal. Adults are golden brown or orange with curved horizontal stripes radiating from the pectoral-fin base area, running along the sides towards the posterior portion of the dorsal fin. They also have two horizontal blue stripes across the face. A blue ring is behind and slightly above the edge of the operculum. Caudal fin is white with bright yellow margin.
The ideal aquarium should have a specific gravity of 1.020 to 1.025, with a pH of 8.1 to 8.4, and a temperature between 72 and 78° F. Aquariums for the Bluering Angelfish should be at least 80 gallons in volume.
Provide plenty of places to swim and plenty of hiding places such as caves and live rock for grazing.
A reef environment could be appropriate for specimens that do not pick at invertebrates. You should observe it to be sure it is not eating corals. Plenty of room for swimming and plenty of places for hiding should be provided.