
Ostorhinchus angustatus
Family: Apogonidae ยท Cardinalfish
Also known as: Broadstripe Cardinal, Broad-striped Cardinalfish
The Broadstripe Cardinalfish is a distinctive species easily identified by the wide dark horizontal stripe that extends from its snout through to the base of its tail, set against a pale silvery-white body. Found throughout the Western Pacific, this species is a common inhabitant of coral reefs and lagoons where it forms small aggregations among branching corals and rock formations. Its bold patterning and manageable size make it a visually interesting addition to the home reef aquarium.
This species is remarkably easy to maintain in captivity, making it an ideal choice for beginning marine aquarists. The Broadstripe Cardinalfish is hardy, disease-resistant, and adapts readily to aquarium foods. It is a social species that displays its most natural behavior when kept in groups of three or more. Provide a well-aquascaped tank with plenty of live rock formations that offer caves, ledges, and overhangs for the fish to shelter in during daylight hours.
As a completely reef-safe species, the Broadstripe Cardinalfish will not disturb any corals or invertebrates in the tank. Its peaceful temperament makes it an outstanding community fish that pairs well with a wide variety of other non-aggressive marine species. The species is particularly attractive when kept as a small school, with the group hovering together near a favored reef structure.
The Broadstripe Cardinalfish feeds on small crustaceans and zooplankton in the wild. In the aquarium, it accepts frozen mysis shrimp, enriched brine shrimp, copepods, and quality marine pellets or flakes. Feed two to three times daily with appropriately sized portions.
The Broadstripe Cardinalfish is extremely peaceful and thrives alongside clownfish, gobies, blennies, firefish, and other cardinalfish species. It should not be housed with aggressive or large predatory fish.
Check CompatibilityA paternal mouthbrooder with the male incubating fertilized eggs in his oral cavity for two to three weeks. Breeding is achievable in captivity with established pairs and consistent water quality.