Common name: Japanese butterflyfish

Scientific name: Chaetodon nippon Steindachner & Döderlein, 1883
Wrought Iron ButterflyfishBrownbanded butterflyfish (Chaetodon modestus) in Japan
two beautiful nudibranchs on a coral, macro shotThreadfin butterflyfish

General information

The Japanese Butterflyfish, Chaetodon nippon, is a striking species known for its vibrant coloration and unique pattern. This species is relatively rare in the aquarium trade, making it a prized addition for many enthusiasts. It is characterized by a white body with a series of black vertical stripes and a distinctive orange patch on its dorsal fin.

Details

Recommended minimum tank volume
200 liter (53 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
22 to 26 °C (72 to 79 °F)
Acidity
pH 8.1 to 8.4
Average size
18 cm (7″)
Care level
Moderate to easy
Diet
Omnivore
Social
Pair
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Butterflyfish
    Chaetodontidae
  6. Genus
    Butterflyfish
    Chaetodon
  7. Species
    Japanese butterflyfish
    Chaetodon nippon Steindachner & Döderlein, 1883
  8. Synonyms
    Chaetodon carens Seale, 1910
    Chaetodon decipiens Ahl, 1923

Care

Chaetodon nippon requires a well-established aquarium with plenty of swimming space and a variety of live rock formations for shelter. They are not considered reef-safe as they may nip at corals and sessile invertebrates. A varied diet of meaty foods, including mysis shrimp and marine flakes, is essential for maintaining their health and coloration.

Reproduction

In the wild, Japanese Butterflyfish form monogamous pairs during the breeding season. They are broadcast spawners, releasing eggs and sperm into the water column where fertilization occurs. In the home aquarium, breeding is rare and challenging.

Habitat

Native to the Northwest Pacific, particularly around Japan, this species is found in coastal reefs and rocky outcroppings. They prefer clear waters where they can forage for their preferred diet of polyps, benthic invertebrates, and algae.