Saltwater Fish
Yellow Coris Wrasse

Species Description…

Scientific Name: Halichoeres chrysus
Common Name: Yellow Coris Wrasse
Species Group: Wrasses
Habitat: Reef Safe
Care Level: Beginner
Temperament: Peaceful
Diet Type: Carnivore
Role in Aquarium: Cleanup Crew
Max Fish Length: 5 (inches)
Min Aquarium Size: 50 (gallons)
Native Range: Indo-Pacific, including the Great Barrier Reef and Indian Ocean
Halichoeres chrysus - Yellow Coris Wrasse

Halichoeres chrysus (Yellow Coris Wrasse)

Overview

  • Native to the Indo-Pacific, commonly found in coral reefs and sandy lagoons.
  • Recognized for its vibrant yellow body, making it a visually striking addition to aquariums.
  • A highly active swimmer, constantly foraging along the substrate and reef structures.
  • Juveniles and adults maintain their bright yellow coloration, though slight fading can occur with age.
  • Often used in reef tanks to control pests like flatworms and bristle worms.

Feeding

  • Carnivorous diet, primarily feeding on small crustaceans, worms, and mollusks.
  • 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 to support its high activity levels.
  • Thrives in tanks with a sandbed, where it can naturally forage for hidden prey.

Habitat

  • Typically found in coral reef slopes, lagoons, and sandy coastal areas.
  • Requires an aquarium with open swimming space and a soft sand substrate for burrowing.
  • Best kept in tanks with rockwork for shelter and hiding spots.
  • Moderate water flow and well-oxygenated water support its natural behavior.
  • A minimum tank size of 50 gallons is recommended to accommodate its active nature.

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 or temperature.
  • Regular sandbed maintenance is important, as it burrows at night for protection.

Compatibility

  • Generally peaceful but may exhibit territorial behavior towards smaller wrasses.
  • Compatible with other peaceful reef fish such as clownfish, gobies, and tangs.
  • Should not be housed with overly aggressive species that may intimidate it.
  • Completely reef-safe with corals but may consume small ornamental invertebrates.
  • Does well in a community setting but may become dominant in smaller aquariums.

Aquarium Behavior

  • Highly active swimmer, frequently seen darting in and out of rock structures.
  • Often forages by picking at sand and rock surfaces for small invertebrates.
  • Burrows in the sand at night for protection, emerging at dawn.
  • Displays curiosity towards new tank additions and environmental changes.
  • Thrives in tanks that mimic its natural reef habitat with ample space to explore.