Common name: Pink demoiselle

Scientific name: Chrysiptera rex (Snyder, 1909)

General information

The Regal Demoiselle, Chrysiptera rex, is a vibrant species of damselfish that is gaining popularity in the marine aquarium trade. Known for its striking blue coloration, this fish adds a splash of color to any aquarium. It is a hardy species, which makes it a suitable choice for both novice and experienced aquarists.

Details

Recommended minimum tank volume
75 liter (20 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 28 °C (75 to 82 °F)
Acidity
pH 8.1 to 8.4
Average size
8 cm (3″)
Care level
Easy Hardy and adaptable
Diet
Omnivore Varied diet, accepts most foods
Social
Solo Can be territorial
Reefsafe
Yes
Aggression
Semi aggresive May nip at similar species
Captive bred
Yes Bred in home aquariums

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Damselfish
    Pomacentridae
  6. Genus
    Damselfish
    Chrysiptera
  7. Species
    Pink demoiselle
    Chrysiptera rex (Snyder, 1909)
  8. Synonyms
    Abudefduf rex Snyder, 1909
    Glyphididontops rex (Snyder, 1909)
    Glyphidodontops rex (Snyder, 1909)

Care

Chrysiptera rex is a relatively easy fish to care for. It requires an aquarium with plenty of rockwork and hiding spaces to feel secure. This species is known for being territorial, so it's important to provide ample space to prevent aggression, especially if housing multiple individuals or with other damselfish species. A varied diet of meaty foods, algae, and high-quality marine flake or pellet food will help maintain their health and coloration.

Reproduction

In the wild, Regal Demoiselles are oviparous, with distinct pairing during breeding. Males prepare and guard nesting sites where females lay eggs. The male then protects the eggs until they hatch. In the aquarium, breeding can occur, but raising the fry can be challenging due to their small size and specific dietary needs.

Habitat

The natural habitat of the Regal Demoiselle includes coral reefs and lagoons in the Western Pacific, from the Philippines to Australia. They are typically found at depths ranging from shallow waters to about 30 meters. In the aquarium, simulating their natural environment with live rock and stable water conditions is beneficial for their well-being.