Common name: rainbow wrasse

Scientific name: Halichoeres iridis Randall & Smith, 1982
Radiant Wrasse (Halichoeres iridis) from Western Indian Ocean

General information

The Peacock Wrasse, scientifically known as Halichoeres iridis, is a vibrant and active fish that adds both color and dynamism to a saltwater aquarium. Its body is adorned with a beautiful array of colors that can include greens, blues, and oranges, often with a striking iridescent quality that changes as the fish moves in the light. This species is part of the Labridae family, which is known for its members' cleaning behaviors and intricate social structures.

Details

Recommended minimum tank volume
200 liter (53 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
12 cm (5″)
Care level
Moderate to easy
Diet
Omnivore
Social
Harem
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Wrasses
    Labridae
  6. Genus
    Wrasse
    Halichoeres
  7. Species
    rainbow wrasse
    Halichoeres iridis Randall & Smith, 1982

Care

Peacock Wrasses are relatively hardy and can adapt to life in captivity if provided with a well-structured environment that mimics their natural habitat. They require a tank with plenty of live rock for hiding and foraging, as well as open swimming spaces. A sandy substrate is also important for their well-being, as they often bury themselves in the sand when sleeping or feeling threatened. A varied diet of meaty foods, including frozen mysis shrimp and brine shrimp, will help maintain their health and coloration.

Reproduction

In the wild, Peacock Wrasses are protogynous hermaphrodites, meaning they are born female and have the ability to change to male later in life. This usually occurs when there is an absence of a dominant male in the group. In the aquarium, breeding Peacock Wrasses can be challenging due to their complex social and mating behaviors.

Habitat

Peacock Wrasses are found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit coral reefs and rocky outcrops, often at depths ranging from shallow waters to about 30 meters. They are commonly seen darting among the corals and rocks, searching for small invertebrates to eat.