Saltcorner
By Bob Goemans
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Pomacanthus

Pomacanthus arcuatus

(Linnaeus, 1758)

Gray Angelfish

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Western Atlantic Ocean: Rio de Janeiro northward to Florida and occasionally as far as New England

Size: 20 inches (50 cm)

Natural Environment: Inhabits coastal reef slopes with adults mainly at depths of 50 to 100 feet (15 – 30 m), with juveniles mostly in shallower 3 – 35 feet (1 – 10 m) waters. Adults feed primarily on sponges, tunicates, crustaceans, algae and zooplankton whereas juveniles and subadults include abundant amounts of algae in their diet.

General Husbandry: Both the juvenile and adult are quite pretty and hardy, with the juvenile having a black body with three yellow vertical bands on the head area, and two on the body. Its tail fin is marked with a black dot, which may be vertically elongated or rectangular. (If you have a better juvenile photo, please send it my way.) As for the adult, it has an overall pale silvery-grayish body having numerous darker dots, a whitish gray head and white mouth area. Its dorsal and anal fins often have long streamers.

When first introduced into the aquarium, preferably a well-established fish-only aquarium with lots of live rock and cave areas, adults or juveniles should be offered numerous daily feedings so as to quickly acclimate it to its surroundings. Like many others in this genus, their captive diet should consist of a wide variety of frozen foods including fortified brine shrimp, mysis, and especially those containing sponge matter/angelfish food preparations and continued to be offered at least several times daily after its acclimated to its surroundings. Furthermore, flake foods, and especially those containing Spirulina and/or Nori should be also offered, along with fresh broccoli and macroalgae, as ‘greens’ make up a portion of this species diet, especially the juveniles and subadults.

Depending upon its tankmates, juveniles may be somewhat shy when first entering the aquarium, and may hide in caves and crevices. But as time passes, will become more outgoing and begin to establish its territory. As for adults, one of the largest in this genus and considered almost as feisty as those in the Holacanthus genus, it all depends on aquarium size and tankmates, but its preferable it is the last angelfish to be added to the aquarium.

Taxonomy:

    Order: Perciformes

    Suborder: Percoidei

    Family: Pomacanthidae

    Genus: Pomacanthus

FYI: Keeping more than one genus of angelfishes in the same aquarium is possible, yet depends upon several aspects. The following suggested circumstances are just that, possibilities that when heeded and adjusted to actual aquarium conditions ‘may’ make multiple angelfish collections feasible.

Aquarium size – the larger the better.

Species from the same genus should not be in the same aquarium.

The smallest and most docile genus species should be the first introduced with the largest and most malicious the last to be added.

Do not place similar coloration species in the same aquarium.

Those already in the aquarium should be well fed before adding a newcomer.

Have sufficient hiding places/rocky caves.

Do not overfeed meaty foods, especially juveniles, as it may lead to a fatty deposit around the liver that could stop production of vitamin A. This could cause blindness, often referred to as nutritional blindness.

Keep in mind all angels have cheekspines at the edge of their gill cover; therefore use caution when handling and also avoid using a net to capture it, as it may become stuck or tangled in the net and become damaged when removed.

Has been reared in captivity.

Experience Level: Intermediate

Temperament: Semi-aggressive

Diet: Omnivore

Acclimation Time: 30 minutes+

Aquarium Environment: Fish-only and Reef Aquariums (See Below)

Reef Safe: Juveniles – Yes/Adults - No - will nip clam mantles, large and small polyped stony (LPS/SPS) corals, and also some soft corals and tubeworms.

Minimum Tank Size: 180 gallons

Temperature Range: 72 - 81°F (22 – 27°C)

Specific Gravity: 1.020 - 1.026

pH: 8.0 - 8.5

 Pomacanthus arcuatus (Gray Angelfish)
Photo © Bob Fenner
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