Gray Angelfish (Pomacanthus arcuatus) Care Guide
Pomacanthus arcuatus, the gray angelfish, is one of the largest Western Atlantic angels, a sponge-eater whose juveniles serve as cleaners.
Overview
Pomacanthus arcuatus, the gray angelfish, is a large marine angel of the family Pomacanthidae. FishBase records a maximum length of about 60.0 cm, making it one of the largest angelfishes. Juveniles are black with yellow bars; adults are grey-brown with darker speckling.
Taxonomy
- Family: Pomacanthidae
- Genus: Pomacanthus
- Scientific name: Pomacanthus arcuatus
Habitat
FishBase reports a Western Atlantic range from New England, USA, through the Caribbean to Rio de Janeiro, Brazil. It is marine, reef-associated and non-migratory in tropical waters of about 22-28 °C, occurring at depths of about 2-60 m.
Tank requirements
- Minimum tank volume: 1200 L (317 gal)
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- dKH (carbonate hardness): 8-12
- Lifespan: 15-25 years
Diet
FishBase reports that adults consume primarily sponges along with tunicates, algae, zoantharians, gorgonians, hydroids, bryozoans and seagrasses, while juveniles take part in cleaning behaviour. In aquaria a varied diet including sponge-based angelfish foods and marine algae is required.
Compatibility
This is a large, semi-aggressive angel. FishBase notes monogamous pairing and home-ranging behaviour without strong territorial defence. Suitable companions include tangs in large tanks, triggers and large wrasses.
Reef compatibility
Because it feeds heavily on sponges and other sessile invertebrates, the species is not considered reef-safe and may damage corals, sponges and tunicates. It is best kept in fish-only systems. Maintain specific gravity around 1.024-1.026 and carbonate hardness of 8-12 dKH.
Conservation status
IUCN Red List: Least Concern (assessed 2009), as reported by FishBase.