Common name: Dwarf Cardinalfish

General information

The Dwarf Cardinalfish, Ostorhinchus nanus, also known as the Ornate Cardinalfish, is a small and peaceful marine fish that is well-suited for reef aquariums. This species is known for its striking coloration, typically displaying a pale body with orange to red vertical stripes and a distinctive dark spot at the base of the caudal fin.

Care

Dwarf Cardinalfish are relatively easy to care for, making them suitable for both beginner and advanced aquarists. They thrive in a well-established aquarium with plenty of hiding places and a peaceful community. These fish prefer dim lighting and a gentle water flow. They are carnivorous and should be fed a varied diet of meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood.

Reproduction

In the wild, Dwarf Cardinalfish are mouthbrooders, with males incubating the eggs in their mouths until they hatch. This fascinating reproductive behavior can also be observed in the home aquarium, where successful breeding can occur if the environment is stable and the fish are well-fed.

Habitat

Ostorhinchus nanus is found in the Western Pacific, from the Philippines to Australia, inhabiting coral reefs and lagoons. They are typically seen in small groups hovering above the substrate or among coral branches, at depths ranging from 1 to 18 meters.