Elongate Unicornfish

Geographical Origin and Habitat: Native to the Western Pacific Ocean, ranging from Indochina and the Philippines to northern Australia. Found along deep seaward reef slopes.

Taxonomy and Morphology: Member of the family Pomacentridae (Acanthuridae error correction: Acanthuridae). Features a distinctively elongated, compressed body. Reaches 60 cm. Does not develop a horn.

Social Behavior: Active pelagic swimmer in open waters above reefs. Requires strong water current to maintain proper oxygenation levels in the aquarium.

Coloration and Sexual Dimorphism: Silvery-grey to pale bluish base color, marked with numerous tiny dark spots on the upper body. Features two caudal spines on each side of the tail base.

Aquarium Setup: Requires a massive aquarium of at least 1200 liters with extensive open swimming areas and a secure lid to prevent jumping.

Diet and Feeding: Herbivorous. Feeds on zooplankton and macroalgae. Provide high-quality dried seaweed (Nori), vegetable-based flakes, pellets, and frozen mysis.

Water Quality: Maintain stable marine parameters: temperature 24-28 °C, pH 8.1-8.4, specific gravity 1.020-1.025, and strong water flow.

Compatibility and Cohabitation: Generally peaceful toward community reef fish. May show territorial aggression toward other large surgeonfishes of similar shape.

Aquarium Breeding: Breeding in captivity has not been achieved. In nature, they spawn in groups, releasing pelagic eggs into ocean currents.

Risks and Diseases: Highly susceptible to skin parasites such as Marine Ich and velvet if stressed. Keeping water quality pristine is crucial for health.