Melanurus Wrasse

Geographical Origin and Habitat: Widespread in the Western Pacific, from Indonesia and the Philippines to the Solomon Islands and the Great Barrier Reef. Inhabits shallow coastal reefs and lagoons down to 15 meters.

Taxonomy and Morphology: Member of the genus Halichoeres. Features a fusiform body typical of wrasses, reaching up to 12 cm (4.7 inches). Equipped with a small terminal mouth with specialized teeth to catch benthic prey.

Social Behavior: Peaceful and industrious. Spends daytime foraging on live rocks and buries itself completely in the sand at night or when threatened to sleep.

Coloration and Sexual Dimorphism: Exhibits beautiful pink-orange and blue-green horizontal stripes. Adult males show more intense coloration with a prominent dark spot outlined in yellow on the tail base and dorsal fin, which is smaller or absent in females.

Aquarium Setup: Requires a spacious tank of at least 200 liters with a deep sand bed (at least 5-8 cm / 2-3 inches) of fine sand for sleeping and hiding. A tight lid is mandatory to prevent jumps.

Diet and Feeding: Carnivore. Feeds on flatworms, pyramidellid snails, nudibranchs, and small crustaceans. Readily accepts mysis, brine shrimp, and high-quality protein pellets.

Water Quality: Demands stable parameters: temperature 24-27°C (75-81°F), pH 8.1-8.4, specific gravity 1.022-1.025, GH 15-25, and KH 8-12.

Compatibility and Cohabitation: Great community and reef-safe fish. Does not bother corals, but may prey on very small ornamental shrimps or feather dusters.

Aquarium Breeding: Extremely difficult. Pelagic spawners. Larvae require specialized plankton cultures, which are difficult to maintain in home aquaria.

Risks and Diseases: Prone to mouth and skin injuries if forced to bury in coarse gravel or crushed coral rather than fine sand. Susceptible to marine ich.