Common name: Humbug dascyllus

Scientific name: Dascyllus aruanus (Linnaeus, 1758)
Humbug dascyllusThreeband puller (Dascyllus aruanus) in Japan
One humbug dascyllus underwaterUnderwater coral reef scene with humbug damselfish - (Dascyllus aruanus)

General information

The Humbug Dascyllus, Dascyllus aruanus, is a small and strikingly patterned damselfish that is popular among reef aquarists. It is characterized by its bold black and white stripes and is often found in association with coral reefs. This species is known for its hardiness and adaptability, making it a suitable choice for both beginner and advanced hobbyists.

Details

Recommended minimum tank volume
100 liter (26 gallons)
Salinity
S.G. 1.020 to 1.025
Temperature
24 to 28 °C (75 to 82 °F)
Acidity
pH 8 to 8.4
Average size
10 cm (4″)
Care level
Easy Hardy and adaptable
Diet
Omnivore Flakes, pellets, frozen foods
Social
School Best in groups, can be territorial
Reefsafe
Yes
Aggression
Semi aggresive May be territorial with space
Captive bred
Yes Available as captive-bred

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Damselfish
    Pomacentridae
  6. Genus
    Dascyllus
    Dascyllus
  7. Species
    Humbug dascyllus
    Dascyllus aruanus (Linnaeus, 1758)
  8. Synonyms
    Abudefduf caroli Curtiss, 1938
    Chaetodon arcuanus Gmelin, 1789
    Chaetodon aruanus Linnaeus, 1758
    Dascyllus arnanus (Linnaeus, 1758)
    Dascyllus blochii Castelnau, 1875
    Pomacentrus devisi Jordan & Seale, 1906
    Pomacentrus emamo Lesson, 1831
    Pomacentrus trifasciatus De Vis, 1884
    Tetradrachmum arcuatum Cantor, 1850
    Tetradrachmum aruanum (Linnaeus, 1758)

Care

Humbug Dascyllus are relatively easy to care for. They thrive in well-established aquariums with plenty of live rock for shelter and territories. They can be territorial, especially in smaller tanks, so it's important to provide ample space and hiding places to minimize aggression. A varied diet of meaty foods, algae, and high-quality commercial feeds will keep them healthy and vibrant.

Reproduction

In the wild, Dascyllus aruanus forms breeding pairs or small groups. They are oviparous, with the female laying eggs on a substrate, which the male then fertilizes and guards. In the aquarium, breeding can occur if the environment is stable and the fish are well-fed, but raising the fry can be challenging due to their small size and specific dietary requirements.

Habitat

The Humbug Dascyllus is native to the Indo-Pacific region, from the Red Sea and East Africa to the Line Islands and Tuamoto Islands, north to southern Japan, and south to New Caledonia and the Great Barrier Reef. They are commonly found in shallow lagoons and on outer reef slopes, often in association with branching corals like Acropora.