Common name: Ringtailed cardinalfish

General information

The Golden Cardinalfish, Ostorhinchus aureus, is a small and attractive marine fish known for its peaceful demeanor and striking coloration. It is a member of the family Apogonidae, which includes many species of cardinalfish that are popular in the aquarium trade. This species is characterized by its golden-yellow body with a distinctive black band that runs vertically through the eye and a second black band at the base of the caudal fin.

Care

Golden Cardinalfish are relatively easy to care for and make a great choice for both beginner and intermediate aquarists. They thrive in a well-established aquarium with plenty of hiding places and a peaceful community. These fish are nocturnal and prefer dimly lit conditions during the day. They are omnivores and will accept a variety of foods including small pellets, flake foods, and frozen or live brine shrimp and mysis shrimp.

Reproduction

In the wild, Golden Cardinalfish are mouthbrooders, with males taking on the responsibility of carrying the eggs in their mouths until they hatch. This fascinating reproductive behavior can also be observed in the home aquarium, making them an interesting species for aquarists interested in breeding marine fish.

Habitat

Ostorhinchus aureus is found in the Indo-Pacific region, from the Red Sea and East Africa to Samoa, and from the Ryukyu Islands to New Caledonia and the Austral Islands. They typically inhabit coral reefs and lagoons, often sheltering in caves or under ledges during the day. They can be found at depths ranging from shallow waters to about 30 meters.