Chevron Butterflyfish

Geographical Origin and Habitat: Tropical Indo-Pacific, widely distributed from the Red Sea and East Africa to the Hawaiian and Tuamotu Islands. Strictly associated with branching Acropora table corals.

Taxonomy and Morphology: Member of the family Chaetodontidae. Distinctly elongated body profile compared to typical butterflyfishes, sometimes placed in the subgenus Megaprotodon.

Social Behavior: Highly territorial and aggressive toward other butterflyfishes. Defends its territory (usually a single table Acropora) aggressively from food competitors.

Coloration and Sexual Dimorphism: Silvery-white body with thin, black, V-shaped chevron markings pointing forward. The caudal fin is black with a thin yellow margin, and a black bar runs through the eye.

Aquarium Setup: Requires a large, specialized reef-style aquarium of at least 350 liters containing extensive branching or table Acropora coral colonies.

Diet and Feeding: Obligate corallivore, feeding exclusively on Acropora polyps and mucus. Almost impossible to keep in home aquariums unless fed live corals or successfully trained.

Water Quality: Demands pristine marine conditions: temperature 22-27 °C, pH 8.1-8.4, salinity 1.020-1.025 with zero organic waste, strong skimming, and high water flow.

Compatibility and Cohabitation: Highly aggressive toward other butterflyfishes. Not reef safe. Best housed in large fish-only systems with robust, non-competing tankmates.

Aquarium Breeding: Reproduction in home aquariums is undocumented. Spawns pelagic eggs, and larvae spend weeks drifting in open ocean currents before settling.

Risks and Diseases: Very high risk of starvation in captivity. Recommended only for public aquaria or expert hobbyists capable of providing live corals for food.