Common name: Half-yellow butterflyfish

Scientific name: Chaetodon smithi Randall, 1975

General information

Smith's Butterflyfish, scientifically known as Chaetodon smithi, is a vibrant and attractive species popular among marine aquarists. This species is distinguished by its striking coloration, featuring a white body with a broad diagonal black band and a yellow dorsal fin. It is a member of the family Chaetodontidae, which is known for its diverse and colorful representatives.

Details

Recommended minimum tank volume
200 liter (53 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
Diet
Omnivore
Social
Pair
Reefsafe
Yes
Aggression
Peaceful
Captive bred
No

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
    Half-yellow butterflyfish
    Chaetodon smithi Randall, 1975
  8. Synonyms
    Chaetodon hemichrysus Burgess & Randall, 1978

Care

Smith's Butterflyfish are considered moderately difficult to care for due to their specific dietary requirements. They thrive in well-established aquariums with plenty of live rock for grazing and hiding. These fish are not coral-friendly and may nip at soft and stony corals, so they are best kept in a fish-only or a reef tank with caution. A varied diet of meaty foods, marine flakes, and pellets is essential for their health.

Reproduction

In the wild, Smith's 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, but providing a stress-free environment with excellent water quality can encourage spawning behavior.

Habitat

Smith's Butterflyfish are found in the Indo-Pacific region, from the Maldives to Japan, and south to Indonesia. They prefer clear lagoon and seaward reefs, typically at depths ranging from shallow waters to about 30 meters. Their natural habitat includes areas with abundant coral growth, which provides both food and shelter.