Saltwater Fish
Redband Anthias

Species Description…

Scientific Name: Pseudanthias rubrizonatus
Common Name: Redband Anthias
Species Group: Anthias
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Peaceful
Diet Type: Carnivore
Role in Aquarium: Schooling Fish
Max Fish Length: 5 (inches)
Min Aquarium Size: 75 (gallons)
Native Range: Indo-Pacific, including the Great Barrier Reef, Indonesia, and Papua New Guinea
Pseudanthias rubrizonatus - Redband Anthias

Pseudanthias rubrizonatus (Redband Anthias)

Overview

  • Native to the Western Pacific, especially near coral reef drop-offs and outer reef slopes.
  • Features a vibrant pink to reddish body with a distinct vertical red bar on the side, more prominent in males.
  • Schooling species often seen swimming mid-water above reef structures.
  • Recommended for intermediate to advanced aquarists due to its dietary needs and sensitivity to water quality.

Feeding

  • Planktivorous; naturally feeds on zooplankton and other small waterborne organisms.
  • In captivity, thrives on mysis shrimp, enriched brine shrimp, finely chopped seafood, and specially formulated anthias foods.
  • Requires multiple small feedings throughout the day to stay healthy and active.
  • Consistency and dietary variety are key to maintaining coloration and vitality.

Habitat

  • Best kept in a large, well-established reef aquarium (minimum 75 gallons) with open swimming space and plenty of rockwork for shelter.
  • Appreciates a peaceful environment with gentle water flow and good oxygenation.
  • Structured reef aquascaping with overhangs and caves helps reduce stress.
  • High water quality is essential for long-term success.

Fish Care

  • Preferred water temperature: 72-78°F (22-26°C).
  • Recommended pH level: 8.1–8.4; specific gravity: 1.020–1.025.
  • Very sensitive to fluctuations; requires consistent water conditions and regular monitoring.
  • Quarantine new arrivals and monitor closely for common marine illnesses.

Compatibility

  • Peaceful species that thrives in groups, ideally with one male and several females.
  • Reef-safe and compatible with corals and ornamental invertebrates.
  • Best housed with other non-aggressive reef fish such as gobies, dartfish, peaceful wrasses, and clownfish.
  • Avoid aggressive species that may outcompete them or cause stress.

Aquarium Behavior

  • Active, open-water swimmers that exhibit strong schooling behavior.
  • Spend much of their time in mid-water, darting in and out of rock structures when startled.
  • Display brilliant colors and confident swimming when kept in a stress-free, social group.
  • Providing the right tank mates and layout helps encourage natural and vibrant behavior.