Saltcorner
By Bob Goemans
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Chaetodon

Chaetodon ocellatus

Bloch, 1787

Spotfin Butterflyfish

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Western Atlantic Ocean: Caribbean, Florida, and Gulf of Mexico.

Size: 8 inches (20 cm)

Natural Environment: Inhabits reef faces and fore-reef slopes rich in stony coral growth at depths between 10 – 300 feet (3 – 90 m) and feeds on hard corals, worms, and crustaceans.

General Husbandry: Quite attractive, having a silvery body, black eye band, and yellow pelvic, dorsal, anal and tail fins. Juveniles have a black spot on the dorsal and anal fins.

Sometimes a challenging feeder, and best maintained in larger peaceful fish-only aquariums, especially those with lots of open swimming space, and live rock hiding places. 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.

Should this species be difficult to get feeding, 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. The above-mentioned use of black worms is also one of the most preferred foodstuffs by almost all butterflyfish! Over time, frozen foods like mysis and brine shrimp may be more readily accepted.

Taxonomy:

    Order: Perciformes

    Suborder: Percoidei

    Family: Chaetodontidae

    Genus: Chaetodon

FYI: Can be maintained with others in the same genus.

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: Carnivore

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 - 81°F (22 – 27°C)

Specific Gravity: 1.020 -1.026

pH: 8.0 - 8.5

 Chaetodon ocellatus (Spotfin Butterflyfish)
Photo © Bob Fenner
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