Common name: Pajama cardinalfish

General information

The Pajama Cardinalfish, Sphaeramia nematoptera, is a small and peaceful marine fish that is popular among aquarists for its unique appearance and ease of care. It has a distinctive pattern with a silver front half dotted with orange spots and a black posterior end with a white vertical stripe. This nocturnal species is native to the Western Pacific and is often found in lagoons and coral reefs.

Care

Pajama Cardinalfish are hardy and can adapt to a range of aquarium conditions, making them suitable for beginners. They prefer a well-established tank with plenty of hiding places and a peaceful community. These fish are not aggressive and can be kept with other non-aggressive tank mates. They accept a variety of foods, including frozen and live meaty foods, and should be fed small amounts several times a day.

Reproduction

Pajama Cardinalfish are mouthbrooders, with males incubating the eggs in their mouths until they hatch. This fascinating reproductive behavior can sometimes be observed in the home aquarium. The male will not eat during this period, which can last for several weeks.

Habitat

In the wild, Sphaeramia nematoptera is typically found in shallow, sheltered waters with plenty of reef structures. They often hover in small groups among branching corals or over rubble substrates. Their natural range extends from the Indo-West Pacific to the western parts of the Coral Triangle.