Common name: Rearbar cardinalfish

General information

The Whitetail Cardinalfish, scientifically known as Apogon posterofasciatus, is a small and peaceful marine fish that is well-suited for the home aquarium. They are part of the Apogonidae family, which is known for its nocturnal and schooling behavior. These fish are characterized by their striking coloration, with a silver body, black vertical stripes, and a distinctive white tail.

Care

Whitetail Cardinalfish are relatively easy to care for, making them a good choice 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, as they are nocturnal, and will appreciate a quiet environment. They are carnivorous, feeding on a diet of small meaty foods such as brine shrimp, mysis shrimp, and finely chopped seafood.

Reproduction

In the wild, Whitetail 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 if the environment is stable and the fish are well-fed and healthy. Breeding them in captivity can be a rewarding experience for the dedicated hobbyist.

Habitat

Apogon posterofasciatus is found in the Western Pacific, from Indonesia to the Solomon Islands, and north to the Ryukyu Islands. They typically inhabit coral reefs and lagoons, often hiding in crevices or among coral branches during the day. In the aquarium, replicating their natural habitat with live rock formations and coral will help these fish feel at home.