Common name: rifle cardinalfish

General information

The Kiensis Cardinalfish, scientifically known as Ostorhinchus kiensis, is a small and peaceful marine fish that is well-suited for the home aquarium. Its attractive coloration, with a pale body and distinctive dark stripes, makes it a favorite among aquarists. This species is relatively hardy and can be a good choice for both novice and experienced fish keepers.

Care

Kiensis Cardinalfish are adaptable and can thrive in a well-established aquarium with stable water conditions. They prefer an environment with plenty of hiding places, such as live rock or dense coral formations. These fish are nocturnal and may be shy during the day, so providing a dimly lit or shaded area can help them feel secure. They accept a variety of foods, including small frozen or live prey like mysis shrimp and brine shrimp.

Reproduction

In the wild, Kiensis Cardinalfish are mouthbrooders, with the male carrying the eggs in his mouth until they hatch. This fascinating reproductive behavior can also be observed in the home aquarium. The male will not eat during this brooding period, which can last for several weeks. After the eggs hatch, the fry can be raised on a diet of rotifers and later, baby brine shrimp.

Habitat

Ostorhinchus kiensis is found in the Western Pacific, including areas like the Great Barrier Reef, Coral Sea, and reefs around Japan. They typically inhabit shallow coastal reefs and lagoons, often sheltering in staghorn coral during the day. In the aquarium, replicating their natural habitat with live rock and coral can provide a comfortable environment for these fish.