Black-shoulder Wrasse

Geographical Origin and Habitat: Western Pacific: from southern Japan to northern Australia. Found in coral reefs, shallow lagoons, and sandy margins at depths from 1 to 30 meters.

Taxonomy and Morphology: Genus Halichoeres, family Labridae. Elongated body with a pointed snout and specialized teeth for feeding on benthic invertebrates. Grows to 14.0 cm.

Social Behavior: Active diurnal swimmer that spends the day hunting near the substrate. Burrows into the sand bed at night or when threatened.

Coloration and Sexual Dimorphism: Displays pinkish-orange wavy lines on the face and a green-grey body. Adult males possess striking, colorful patterns, whereas juveniles and females exhibit camouflaging stripes or spots.

Aquarium Setup: Requires a spacious aquarium of at least 200.0 liters with a fine sand bed of at least 5-8 cm depth for sleeping. A secure lid is highly recommended.

Diet and Feeding: Active carnivore. Diet should include mysis shrimp, brine shrimp, chopped krill, and high-quality dry pellets.

Water Quality: Keep marine parameters stable: temperature 22.0-26.0 °C, pH 8.1-8.4, specific gravity 1.020-1.025.

Compatibility and Cohabitation: Safe with corals, but may eat small ornamental shrimps, tubeworms, and flatworms. Great for pest control.

Aquarium Breeding: Protogynous hermaphrodite. Broadcast spawner; successful captive breeding in home aquariums is undocumented.

Risks and Diseases: Skin infections can occur if the sand substrate is too coarse or sharp. High jumping risk.