The Captive-Bred Pajama Cardinal (Sphaeramia nematoptera) is a captive-bred variant of the Pajama Cardinalfish, also known as the Spotted Cardinalfish or Polkadot Cardinalfish.

Distribution and Habitat

The Pajama Cardinalfish is distributed throughout much of the western Pacific Ocean from Java to Fiji, and from the Ryukyu Islands south to the Great Barrier Reef.

Physical Description

The Captive-Bred Pajama Cardinal grows to a total length of approximately 8.5 cm (3.3 in). It features distinctive red eyes and a broad dark vertical waistband with scattered red spots toward the tail. It has greenish-yellow faces, bright orange eyes, and silver-based bodies dressed with a bold black scalar margin and posteriors dotted with orange polka dots.

Diet and Feeding

The Pajama Cardinalfish is a carnivorous species. In captivity it accepts a varied diet including mysis shrimp, brine shrimp, and frozen preparations.

Behavior and Reproduction

The Pajama Cardinalfish is a mouthbrooder. The male incubates the eggs in his mouth until they hatch. This species is peaceful and can be kept in groups. It forms a strict hierarchy when kept in small groups.

Aquarium Care

It requires a tank of at least 30 gallons with abundant live rock for hiding. It is considered reef-safe.

Conservation Status

Classified as Least Concern by the IUCN Red List.