Common name: Squarespot anthias

General information

The Square Anthias, scientifically known as Pseudanthias pleurotaenia, is a vibrant and colorful fish that adds dynamic beauty to any reef aquarium. This species is part of the Anthiinae subfamily, which is known for its brightly colored members. The males are particularly striking with their purple blotch on the flanks, hence the name Purple Blotch Basslet, and a square-shaped caudal fin.

Care

Square Anthias are moderately difficult to care for due to their specific dietary and social needs. They thrive in well-established aquariums with plenty of swimming space and hiding places. A group consisting of one male and several females is ideal, as it reflects their natural social structure. They require a diet rich in zooplankton and should be fed multiple times a day to maintain their health and coloration.

Reproduction

In the wild, Square Anthias form harems consisting of a single dominant male and numerous females. They are protogynous hermaphrodites, meaning females have the ability to turn into males if the dominant male perishes. In captivity, breeding can be challenging, but with the right conditions, it is possible to witness their fascinating spawning behavior.

Habitat

Square Anthias are found in the Indo-Pacific region, typically in outer reef slopes and drop-offs. They prefer depths ranging from 10 to 70 meters, where they can be seen swimming in large aggregations above the reef, feeding on plankton carried by the currents.