Size3.3 inches (8.5 cm)
HabitatLagoons, sheltered bays and reefs
- White with a yellow head, a broad darker midsection bar, and purple spots on the rear of its body that disappear or fade during the evening.
- Has distinctive tail fins, and brightly colored red eyes.
- Maximum length that has been found was 3.3 inches (8.5 cm).
- Diet consists of crustaceans.
- Occurs in the Western Pacific from the Ryukyu Islands to Java and New Guinea. Also appears in areas of Micronesia.
- Found in lagoons, sheltered bays and reefs at depths of about 3-46 feet (1-14 m).
- Male pajama cardinalfish is a mouth brooder; he will hold fertilized eggs in his mouth to keep them safe and healthy until they are ready to hatch.
- “Not evaluated” on the IUCN Red List.
- Forms aggregations among the branches of various corals.
- Disperses at night to feed close to the bottom.
- Common home aquarium fish and can be reared in human care.