Common name: Marquesas butterflyfish
General information
The Rarotonga Butterflyfish, scientifically known as Chaetodon declivis, is a vibrant and eye-catching species popular among saltwater aquarium enthusiasts. This species is known for its distinct steep forehead, which gives it the common name 'Steephead Butterflyfish'. The body is primarily white with a series of black vertical stripes and a splash of yellow on the fins.
Details
- Recommended minimum tank volume
- 300 liter (79 gallons)
- Salinity
- S.G. 1.020 to 1.025
- Temperature
- 24 to 27 °C (75 to 81 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 18 cm (7″)
- Care level
- Moderate to easy Sensitive to water quality.
- Diet
- Omnivore Prefers mysis, brine shrimp, spirulina.
- Social
- Pair Best kept in pairs or singly.
- Reefsafe
- No May nip at coral polyps.
- Aggression
- Semi aggresive Territorial; may bully smaller fish.
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassRay-finned FishesActinopterygii
- OrderPerciformesPerciformes
- FamilyButterflyfishChaetodontidae
- GenusButterflyfishChaetodon
- SpeciesMarquesas butterflyfishChaetodon declivis Randall, 1975
- SynonymsChaetodon declevis Burgess & Randall, 1978
Care
Chaetodon declivis requires a well-established aquarium with plenty of live rock for grazing and hiding. They are not considered reef-safe as they may nip at coral polyps and sessile invertebrates. A varied diet of meaty foods, algae, and high-quality marine flake or pellet food is essential for their health.
Reproduction
In the wild, butterflyfish are generally monogamous and exhibit elaborate courtship behaviors. Breeding in captivity is rare and challenging, requiring specific conditions and expert care.
Habitat
Native to the Western Pacific, the Rarotonga Butterflyfish is found in coral-rich areas of lagoons and seaward reefs. They are typically seen at depths ranging from shallow waters to about 30 meters.