Cortez Angelfish (Pomacanthus zonipectus) Care Guide
Pomacanthus zonipectus is an eastern Pacific marine angelfish from the Gulf of California, reaching about 46 cm and feeding heavily on sponges.
Compiled by Aquairi from published sources · Published · Updated
Overview
Pomacanthus zonipectus, the Cortez angelfish, is a large marine angelfish of the eastern Pacific. It was described by Theodore Nicholas Gill in 1862. According to FishBase, it reaches about 46 cm total length. Juveniles and adults differ markedly in pattern: juveniles show a dark background broken by vivid yellow vertical bands with blue bars, while adults become greyer with crisscrossing markings, a yellow arc and a yellow saddle across the nape.
Taxonomy
- Family: Pomacanthidae
- Genus: Pomacanthus
- Scientific name: Pomacanthus zonipectus
- Described by: Gill, 1862
Habitat
The species occurs in the eastern Pacific Ocean from Puerto Peñasco in the northern Gulf of California, Mexico, south to Peru, with vagrants reported as far as southern California and the Galapagos. FishBase records it as marine and reef-associated at depths of 6–12 m, while Wikipedia reports a range of 6–50 m. Juveniles inhabit tidal pools.
Tank requirements
- Minimum tank volume: 1000 L (about 264 gal)
- Temperature: 24–26 °C (75–79 °F)
- pH: 8.1–8.4
- GH: 8–12 °dGH
- Lifespan: 15–25 years
Diet
Pomacanthus zonipectus is an omnivore that, in the wild, feeds primarily on sponges, supplemented by tunicates, algae, bryozoans, hydroids and fish eggs (FishBase, Wikipedia). It is a diurnal feeder. Because of this sponge- and invertebrate-based diet it is not considered reef-safe.
Compatibility
This is a semi-aggressive, mid-water species. FishBase describes adults as monogamous and home-ranging in pairs, while solitary juveniles are territorial. In aquaria it suits large fish-only systems with robust tankmates such as tangs, triggers and wrasses; it should be kept away from soft corals, LPS corals, sponges and tunicates, which it may eat.
Breeding
The species is oviparous and an egg-layer; FishBase reports spawning from midsummer through early fall, with juveniles abundant from August through November. Protogyny (female-to-male sex change) has been proposed for the species but awaits confirmation. Captive breeding is regarded as an expert-level challenge.
Conservation status
IUCN Red List: Least Concern (assessed 8 October 2009, per FishBase).
Cortez Angel (Pomacanthus zonipectus): Breeding Guide
Overview
Pomacanthus zonipectus, the Cortez angel, is an Eastern Pacific species found from the Gulf of California (Puerto Penasco) and north of Bahia Magdalena, Mexico, south to Peru. FishBase lists a maximum total length of about 46 cm and notes it feeds during the day on sponges, tunicates, algae, bryozoans, hydroids and eggs.
Because it eats sponges and other sessile invertebrates, the species is not reef-safe. Juveniles are territorial and solitary, while adults forage widely over the reef in pairs or loose aggregations.
Sexing
There is no reliable external colour difference between the sexes. As in the genus, a breeding pair would be formed by raising fish together and letting the dominant individual become the functional male.
Spawning Behavior & Trigger
FishBase describes the Cortez angel as monogamous and always in home-ranging pairs that do not defend an exclusive territory. Spawning is oviparous, with paired fish rising into the water column to release eggs and sperm. Breeding runs from midsummer to early fall, and juveniles are most abundant from August through November.
A clear seasonal window is therefore the documented trigger; related large angels spawn at dusk, so twilight pelagic spawning within that season is the expected pattern.
Egg & Fry Care
The eggs are pelagic and float into the plankton, hatching into minute larvae adapted to open-water drift and dependent on natural ocean micro-plankton.
Because the eggs disperse in open water and the larvae need ocean plankton, there is no nest to manage, and the consulted sources report no captive rearing of this species.
Common Challenges
- Spawning is seasonal and occurs in open water, so eggs are scattered rather than laid on a guarded surface.
- Larvae need micro-plankton first foods unavailable in aquaria.
- Adults reach about 46 cm and prefer cooler eastern-Pacific water, making a suitable breeding system impractical for hobbyists.