Saltcorner
By Bob Goemans
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Chaetodon

Chaetodon dialeucos

Salm & Mee, 1989

Oman Butterflyfish

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indian Ocean: Red Sea - Coast of Oman.

Size: 7 inches (17 cm)

Natural Environment: Inhabits rocky reefs and coral patches on sandy slopes at depths of 15 – 85 feet (5 – 25 m) and feeds on coral polyps, sea anemones, worms, crustaceans, and algae.

General Husbandry: Rarely seen in the trade, and somewhat drab with a greyish body, its scales edged in dark brown, a wide vertical white band just behind the head, white mouth and black tail.

Best maintained in larger peaceful fish-only aquariums, especially those with lots of open swimming space, live rock hiding places, and having micro and macroalgae growths. As to diet, a meaty diet of live fortified brine shrimp and/or black worms (Lumbriculus variegatus) is a good beginning. Once feeding regularly, various frozen meaty foods such as mysis, can be offered several times daily. Since its known to also injest algae in the wild, flake foods, especially those containing Spirulina and/or Nori should also be occasionally offered.

Should there be a problem getting this species to feed, small human consumption clams/black mussels purchased in local grocery stores and placed on the half-shell in the aquarium may help entice it to begin feeding. Over time, frozen foods like mysis and brine shrimp may be more readily accepted.

Taxonomy:

    Order: Perciformes

    Suborder: Percoidei

    Family: Chaetodontidae

    Genus: Chaetodon

FYI: Should not be maintained with others in the same genus or with others from other butterflyfish genera.

Juveniles acclimate more easily to aquarium life than do adults.

Pressing some soft foods into openings/crevices on a piece of old dead coral skeleton can sometimes encourage finicky eaters to begin feeding.

Experience Level: Intermediate

Temperament: Peaceful

Diet: Omnivore

Coral Safe: No

Invertebrate Safe: No

Acclimation Time: 30 minutes+

Aquarium Environment: Fish-only aquarium

Tankmates: Peaceful or non-aggressive

Minimum Tank Size: 100 gallons

Temperature Range: 72 - 82°F (22 – 28°C)

Specific Gravity: 1.020 -1.026

pH: 8.0 - 8.5

 Chaetodon dialeucos (Oman Butterflyfish)
Photo © John Randall
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