Yellow Wrasse

The Yellow Wrasse (Halichoeres chrysus), also known as the Canary Wrasse, is a vibrant and active marine fish that adds a splash of color to reef aquariums. Its bright yellow hue and beneficial habit of controlling certain pests make it a popular choice among aquarists.

Essential Information

• Common Names: Yellow Wrasse, Canary Wrasse, Golden Wrasse, Yellow Coris Wrasse
• Scientific Name: Halichoeres chrysus
• Family: Labridae
• Origin/Habitat: Found throughout the tropical and subtropical waters of the central Indo-Pacific, including areas around Indonesia, Japan, and the Solomon Islands.
• Maximum Size: Typically grows up to 5 inches (12.7 cm) in length.
• Lifespan: With proper care, they can live up to 5 to 7 years in captivity.
• Level of Difficulty: Easy to Moderate; suitable for both novice and experienced aquarists.
• Reef Safe: With caution; while they help control pests like flatworms, they may prey on small invertebrates such as ornamental shrimp, snails, or fanworms.

Appearance & Physical Traits

• Coloration & Pattern: Displays a uniform bright yellow coloration. Juveniles and young females may have multiple black spots on their fins; mature adults typically exhibit only one spot.
• Body Shape & Structure: Elongated body with a pointed snout; possesses sharp teeth used for feeding on hard-shelled prey.

Habitat & Environmental Needs

• Minimum Tank Size: A 50-gallon (189-liter) aquarium is recommended to provide ample swimming space.
• Water Temperature: Maintain between 72°F and 78°F (22°C to 25.5°C).
• pH Level: Keep between 8.1 and 8.4.
• Specific Gravity: Optimal range is 1.020 to 1.025.
• Aquascape: Provide a sandy substrate of at least 2-3 inches (5-7.5 cm) depth, as they burrow into the sand to sleep or when frightened. Include live rock structures for hiding and foraging.

Diet & Feeding

• Diet Type: Carnivorous
• Preferred Foods: Feeds on a variety of meaty foods, including vitamin-enriched frozen mysis shrimp, brine shrimp, and other marine-based preparations.
• Feeding Frequency: Offer small portions 2 to 3 times daily.

Behavior & Compatibility

• Temperament: Generally peaceful but may become territorial, especially towards similar species.
• Social Behavior: Typically solitary; can be aggressive towards smaller, more passive fish, especially as they mature.
• Tank Mate Compatibility: Compatible with other peaceful marine species; avoid housing with small invertebrates, as they may be preyed upon.
• Activity Level: Active swimmers, often seen foraging throughout the tank during daylight hours.

Care Considerations & Additional Notes

• Ease of Care: Moderate; requires stable water parameters and a well-established tank.
• Special Requirements: A tight-fitting lid is essential, as they are known to jump. Regular monitoring of water quality and providing a varied diet will promote health and longevity.
• Breeding Info: Breeding in captivity is rare and not well-documented.
• Additional Notes: While beneficial for controlling certain pests like flatworms, they may also consume desirable invertebrates such as ornamental shrimp and small crabs.