Squareback Anthias Care Guide
Pseudanthias pleurotaenia · Saltwater Anthias
What Squareback Anthias look like
The Squareback Anthias (Pseudanthias pleurotaenia) exhibits a striking coloration characterized by a vibrant yellow-orange body with a distinct square-shaped dark patch on the dorsal fin, which is particularly pronounced in males. Adult specimens can reach a maximum size of approximately 4 inches (10 cm) in standard length. Sexual dimorphism is evident, with males displaying more intense coloration and larger dorsal fins compared to females. Defensive adaptations include a laterally compressed body that allows for agile maneuverability in the water column, as well as the presence of a lateral line system that aids in detecting movement and pressure changes in their environment. The dentition is small and conical, adapted for feeding on zooplankton, and the species possesses a moderately elongated anal fin that contributes to its streamlined swimming capabilities.
Behavior & temperament
Squareback Anthias are typically found in small to medium-sized schools, exhibiting a social hierarchy where dominant males maintain territories and lead the group. They are pelagic fish, often swimming in the upper water column above coral reefs. Breeding behavior involves a lek-like system where males display to attract females, and spawning occurs in synchronized events. Their temperament is generally peaceful, although males can exhibit aggressive behaviors towards one another during mating displays or territorial disputes. They are known for their quick darting movements and can rapidly retreat into crevices when threatened.
Diet & feeding
In the wild, Squareback Anthias primarily feed on zooplankton and small invertebrates. In captivity, they require a varied diet that includes high-quality frozen or live foods such as brine shrimp, mysis shrimp, and finely chopped marine preparations.
Behind the name
The genus name 'Pseudanthias' is derived from the Greek 'pseudo' meaning 'false' and 'anthias', a term used for various fish in the family. The species name 'pleurotaenia' comes from the Greek 'pleuro' meaning 'side' and 'taenia' meaning 'band', referring to the distinctive markings on the fish's body.
Plan your tank
Check the numbers before you buy: tank volume, salinity, salt mix, water changes, and your ongoing care routine.
Keeping Squareback Anthias?
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