Common name: Sunset butterflyfish

Scientific name: Chaetodon pelewensis Kner, 1868
Large Jellyfish (Rhizostoma) floating in a blue, tropical ocean at sunset

General information

The Pelewensis Butterflyfish, also known as the Golden Butterflyfish, is a striking species known for its vibrant yellow body and elegant black markings. This fish is a member of the family Chaetodontidae and is appreciated for its beauty and grace in the home aquarium.

Details

Recommended minimum tank volume
300 liter (79 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 28 °C (75 to 82 °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 varied diet, incl. coral polyps.
Social
Pair Pairs are often monogamous.
Reefsafe
No May nip at coral polyps.
Aggression
Semi aggresive Can be territorial.
Captive bred
No

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perciformes
    Perciformes
  5. Family
    Butterflyfish
    Chaetodontidae
  6. Genus
    Butterflyfish
    Chaetodon
  7. Species
    Sunset butterflyfish
    Chaetodon pelewensis Kner, 1868
  8. Synonyms
    Chaetodon germanus De Vis, 1884
    Chaetodon pelewensis germanus De Vis, 1884

Care

Pelewensis Butterflyfish require a well-established aquarium with plenty of live rock for grazing and hiding. They are not considered reef-safe as they may nip at corals and invertebrates. A varied diet of meaty foods, including marine fish, crustacean flesh, and mysis shrimp, is essential for their health.

Reproduction

Breeding Pelewensis Butterflyfish in captivity is challenging and rarely successful. In the wild, they are pelagic spawners, releasing eggs and sperm into the water column where fertilization occurs.

Habitat

Native to the Western Pacific, particularly around Palau and Yap, Pelewensis Butterflyfish are found in coral-rich areas of lagoons and seaward reefs. They prefer clear waters and are typically seen at depths where light penetration supports coral growth.