Pacific Double-saddle Butterflyfish

Geographical Origin and Habitat: Tropical Indo-Pacific, distributed from Cocos-Keeling to the Hawaiian and Tuamotu Islands, north to Japan, and south to the Great Barrier Reef. Inhabits lagoon reefs and outer reef slopes.

Taxonomy and Morphology: Member of the family Chaetodontidae. Highly similar to Chaetodon falcula, but distinguished by coloration details and distribution.

Social Behavior: Peaceful and active species. Found in pairs or small groups. Well-known for its ability to consume nuisance anemones (Aiptasia) in home aquariums.

Coloration and Sexual Dimorphism: Silvery-white body with thin vertical black lines. Marked by two large, dark saddle-like patches on the back. The rear portion of the body and caudal peduncle are yellow.

Aquarium Setup: Requires a mature marine aquarium of at least 300 liters with plenty of live rock to provide hiding spots and natural grazing surfaces.

Diet and Feeding: Omnivorous. Feeds on anemones, algae, and small benthic invertebrates. Accepts high-quality flakes, pellets, frozen brine shrimp, mysis, and marine algae.

Water Quality: Standard marine parameters: temperature 22-27 °C, pH 8.1-8.4, and salinity 1.020-1.025 with efficient filtration and moderate water movement.

Compatibility and Cohabitation: Highly peaceful. Not reef safe as it nips at stony corals. Excellent for Aiptasia control. Best kept with quiet, non-aggressive species.

Aquarium Breeding: Spawning in home aquariums is undocumented. Pelagic spawner. Eggs and larvae drift in the ocean column before settling onto reefs.

Risks and Diseases: Once acclimated, it is relatively hardy. Susceptible to marine ich (Cryptocaryon) and stress. Ensure the aquarium is fully cycled.