
Centropyge argi
Family: Pomacanthidae ยท Dwarf Angelfish
Also known as: Pygmy Angelfish, Cherubfish, Atlantic Pygmy Angelfish
The Cherub Angelfish is one of the smallest members of the dwarf angelfish family and a beloved choice for nano and small reef aquariums. Reaching a maximum size of just 3 inches, this diminutive species displays a striking deep sapphire-blue body contrasted with a vivid orange-yellow face and chest region. The bold coloration packed into such a tiny frame makes it one of the most visually appealing fish for aquarists working with limited tank space.
In the wild, Centropyge argi is found throughout the Western Atlantic and Caribbean, typically inhabiting rubble zones and reef walls at moderate depths between 15 and 90 meters. They are often observed darting between crevices in the reef structure, feeding on algae and detritus. Like other Centropyge species, Cherub Angelfish are protogynous hermaphrodites, living in small harems where the dominant female can transition to male if the existing male is lost from the group.
The Cherub Angelfish is considered one of the hardier dwarf angelfish species and is well-suited for beginner marine aquarists. It adapts readily to captive foods and thrives in established aquariums with plenty of live rock for grazing and hiding. While generally considered reef-compatible with caution, individual specimens may occasionally nip at LPS coral polyps, zoanthids, and clam mantles. This risk is reduced in well-fed specimens with abundant natural grazing surfaces. Despite its small size, the Cherub Angelfish can be feisty and may defend its territory against similarly sized tankmates.
Cherub Angelfish are omnivores that graze on algae, detritus, and small invertebrates in the wild. In captivity, offer a varied diet of Spirulina-enriched flakes and pellets, frozen mysis shrimp, enriched brine shrimp, and high-quality angelfish preparations. Supplement with nori seaweed and ensure ample live rock for natural algae grazing. Feed two to three times daily in small amounts.
The Cherub Angelfish can be territorial toward other dwarf angelfish and similarly sized fish that encroach on its territory. Only one Centropyge species should be kept per tank unless the system is large (100+ gallons) with abundant rockwork. It coexists well with clownfish, gobies, blennies, and other peaceful community fish. Avoid keeping with overly aggressive species that may bully this small fish.
Check CompatibilityCherub Angelfish are protogynous hermaphrodites that spawn at dusk in the wild, with the male and female rising in the water column to release gametes. While spawning behavior has been observed in captivity, rearing the tiny pelagic larvae is extremely challenging. Limited captive breeding success has been reported by specialized facilities, but captive-bred specimens are rarely available commercially.