Saltwater Fish
Radiant Wrasse

Species Description…

Scientific Name: Halichoeres iridis
Common Name: Radiant Wrasse
Species Group: Wrasses
Habitat: Reef Safe
Care Level: Intermediate
Temperament: Peaceful
Diet Type: Carnivore
Role in Aquarium: Cleanup Crew
Max Fish Length: 5 (inches)
Min Aquarium Size: 75 (gallons)
Native Range: Western Atlantic
Halichoeres iridis - Radiant Wrasse

Halichoeres iridis (Radiant Wrasse)

Overview

  • Native to the Western Indian Ocean, particularly around Madagascar and the African coastline.
  • Recognized for its striking orange-red body with electric blue markings along its head and fins.
  • A highly active and peaceful species, making it a great addition to reef aquariums.
  • Juveniles and females display slightly duller coloration compared to vibrant adult males.
  • Often used in reef tanks to help control unwanted pests such as flatworms and small invertebrates.

Feeding

  • Carnivorous diet, primarily feeding on small crustaceans, copepods, and worms.
  • Readily consumes frozen and live foods such as mysis shrimp, brine shrimp, and chopped seafood.
  • Can be trained to eat high-quality marine pellets and flake foods.
  • Requires multiple small meals throughout the day due to its high metabolism.
  • Thrives in tanks with a sandbed, where it can naturally hunt for hidden prey.

Habitat

  • Commonly found in coral reef slopes, sandy lagoons, and outer reef environments.
  • Requires an aquarium with open swimming space and a fine sand substrate for burrowing.
  • Best kept in tanks with live rock to provide shelter and foraging opportunities.
  • Moderate to strong water flow is recommended to simulate natural reef conditions.
  • A minimum tank size of 75 gallons is recommended due to its activity level.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C).
  • Ideal pH range: 8.1-8.4, with a specific gravity of 1.023-1.026.
  • Requires stable water conditions and a well-maintained aquarium.
  • Can be sensitive to sudden fluctuations in salinity and temperature.
  • Regular sandbed maintenance is essential, as it burrows at night for protection.

Compatibility

  • Generally peaceful but may become territorial towards similar wrasses.
  • Compatible with other peaceful reef fish such as clownfish, gobies, and tangs.
  • Should not be housed with overly aggressive species that may harass it.
  • Reef-safe with corals but may consume small ornamental shrimp or snails.
  • Does well in a community setting but may establish a preferred area in the tank.

Aquarium Behavior

  • Highly active swimmer, often exploring every part of the aquarium.
  • Frequently seen picking at rocks and sand in search of small invertebrates.
  • Burrows in the sand at night for protection, emerging in the morning.
  • Displays curiosity towards new tank additions and environmental changes.
  • Thrives in tanks that mimic its natural reef habitat with plenty of space and hiding spots.