Common name: Speckled shrimpfish

General information

The Pajama Cardinalfish, scientifically known as Aeoliscus punctulatus, is a distinctive and attractive species popular among aquarists for its unique appearance and peaceful demeanor. This species is characterized by its sharp, blade-like body and striking coloration, featuring a silver front half and a polka-dotted rear half, separated by a bold, black vertical band.

In the wild, Pajama Cardinalfish are often found in small groups, hovering near seagrass beds, mangroves, or sheltered reefs where they can dart in and out of cover. They are nocturnal by nature, becoming more active at night when they hunt for small crustaceans and plankton.

Care

Pajama Cardinalfish are relatively easy to care for in the home aquarium. They prefer a well-established tank with plenty of hiding places among live rock or dense vegetation. These fish are peaceful and can be kept with a variety of tank mates, but they should not be housed with aggressive species that may bully or outcompete them for food.

A varied diet of meaty foods such as mysis shrimp, brine shrimp, and finely chopped seafood will help maintain their health and coloration. It's also beneficial to feed them in the evening or at night to align with their natural feeding patterns.

Reproduction

Pajama Cardinalfish are mouthbrooders, with the male carrying the eggs in his mouth until they hatch. This fascinating reproductive strategy ensures a high survival rate for the offspring. In the aquarium, breeding can occur if the environment is stable and the fish are well-fed. Observing the male with a bulging mouth is often the first sign that he is carrying eggs.

Habitat

Native to the Indo-Pacific region, Pajama Cardinalfish are typically found in shallow waters, often not deeper than 15 meters. Their natural habitats include areas with soft substrates, such as sand or mud, near protective structures like seagrass beds, mangroves, and coral reefs.