Common name: Mimic cardinalfish

General information

The Twospot Cardinalfish, scientifically known as Apogon phenax, is a small and peaceful marine fish that is well-suited for reef aquariums. It is characterized by its striking coloration, with a silver body, a black vertical bar through the eye, and a second black spot at the base of the caudal fin. This species is nocturnal and tends to be shy, often hiding among the rockwork during the day.

Care

Twospot Cardinalfish are relatively easy to care for, making them a good choice for beginner and intermediate aquarists. They thrive in a well-established aquarium with plenty of hiding places and a peaceful community. These fish prefer dim lighting due to their nocturnal nature. A varied diet of small meaty foods, such as mysis shrimp and brine shrimp, will help maintain their health and coloration.

Reproduction

Like many cardinalfish, Apogon phenax is a mouthbrooder. The male will carry the fertilized eggs in his mouth until they hatch, providing protection from predators. This fascinating reproductive behavior can sometimes be observed in the home aquarium, offering a unique opportunity for aquarists to witness parental care in fish.

Habitat

The Twospot Cardinalfish is native to the Western Pacific, where it is found in coral reefs and lagoons. It prefers sheltered areas with plenty of live rock or coral branches to hide in during the day. In the wild, they are often found at depths ranging from shallow waters to about 30 meters.