Iridescent Cardinalfish (Pristiapogon kallopterus) Care Guide
Pristiapogon kallopterus is a widespread Indo-Pacific cardinalfish of lagoon and seaward reefs that feeds at night on small crustaceans.
Compiled by Aquairi from published sources · Published · Updated
Overview
Pristiapogon kallopterus is a marine cardinalfish of the family Apogonidae, described by Bleeker in 1856 and formerly placed in the genus Apogon. FishBase reports a maximum length around 15.5 cm; it is a benthopelagic, reef-associated species.
Taxonomy
- Family: Apogonidae
- Genus: Pristiapogon
- Scientific name: Pristiapogon kallopterus
- Common synonym: Apogon kallopterus
Habitat
According to FishBase, the species ranges across the Indo-Pacific from the Red Sea south to Algoa Bay, South Africa, east to the Line, Marquesan and Pitcairn Islands, north to southern Japan and the Hawaiian Islands. It inhabits clear-water lagoon patch reefs and seaward reefs from the lower surge zone down to about 45 m, with records to 158 m.
Tank requirements
- Minimum tank volume: 200 L
- Temperature: 24-26 °C (75-79 °F)
- pH: 8.1-8.4
- GH: 8-12 °dGH
- Group size: at least 3 individuals
- Lifespan: 3-8 years
Diet
FishBase reports that the species feeds at night on small benthic and free-swimming crustaceans, with a trophic level of about 3.5. In the aquarium it accepts meaty marine foods.
Compatibility
FishBase notes that adults are often solitary. It is a peaceful species of the middle water column suited to calm marine communities with clownfish, tangs, wrasses and gobies, and should not be combined with large predators.
Breeding
FishBase records the species as a mouthbrooder with distinct pairing during courtship and spawning; the male incubates the eggs in his mouth.
Conservation status
IUCN Red List: Least Concern (assessed 2021), as reported by FishBase.
Pristiapogon kallopterus Breeding Guide
Overview
Pristiapogon kallopterus is a widely distributed Indo-Pacific cardinalfish reaching about 15.5 cm total length, found from the Red Sea to South Africa and east to Hawaii at depths of roughly 3 to 158 m (FishBase). It is benthopelagic and largely solitary, living on clear-water lagoon patch reefs and seaward reefs, and shows green-to-blue iridescence under light at night.
Sexing
External sexing is not documented for this species, and adults are usually solitary rather than paired (FishBase). For breeding, two compatible individuals must be brought together; the male is recognised by the larger head and jaw once he begins to incubate eggs, as in other cardinalfish.
Conditioning
Conditioning relies on stable reef parameters and frequent small meaty feeds. The species feeds at night on small benthic and free-swimming crustaceans (FishBase), so enriched mysis, small marine crustaceans and finely chopped seafood offered in the evening match its natural diet and build spawning condition.
Breeding Setup
Because adults are solitary, a breeding setup needs enough rockwork, ledges and crevices for two fish to hold separate refuges and meet to court without constant conflict. Subdued lighting and calm to moderate flow suit this nocturnal species, and a dedicated tank simplifies tracking a brooding male.
Spawning Behavior & Trigger
The species are mouthbrooders showing distinct pairing during courtship and spawning (FishBase). The female passes an egg mass to the male, who fertilises and orally incubates it; species-specific clutch size and precise triggers are not given in the cited source and so are omitted rather than assumed.
Egg & Fry Care
The male carries the egg mass in his mouth and does not feed during incubation, the paternal oral-brooding pattern of the family. Released larvae are small and pelagic and require a separate rearing tank with very small first foods; no species-level larval protocol appears in the cited source.
Common Challenges
The solitary nature of adults makes forming a compatible pair the first hurdle, requiring space and careful introduction. After that, the small pelagic larvae and their narrow first-feeding window are the limiting factor, and the fasting brooding male must be kept undisturbed.