Saltcorner
By Bob Goemans
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Chaetodon

Chaetodon bennetti

Cuvier, 1831

Bennett’s Butterflyfish, Bluelashed Butterflyfish

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indo-West Pacific Ocean: East African to Pitcairn Islands, north to Southern Japan, and south to Lord Howe and Rapa Islands.

Size: 7 inches (18 cm)

Natural Environment: Inhabits coastal lagoon and reef areas rich in stony coral growth at depths between 15 to 100 feet (5 – 30 m) and feeds almost entirely on stony coral polyps and some algae.

General Husbandry: This quite attractive, almost completely bright yellow species, has a large black patch encircled by bright blue below the dorsal fin, a wide vertical black eye stripe edged in blue, and two curved blue lines above the belly. Nevertheless, rarely seen in the U.S. aquarium hobby because it has a poor survial rate due to its refusal to eat common aquarium foods.

Should be housed 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, even though its technically listed as an Omnivore, its recommended a meaty diet of live fortified brine shrimp, black worms (Lumbriculus variegatus), and small live clams/black mussels be offered several times daily.

Note, some success with this species has been obtained by spreading chopped squid and krill on live rock to induce it to feed.

Taxonomy:

    Order: Perciformes

    Suborder: Percoidei

    Family: Chaetodontidae

    Genus: Chaetodon

FYI: Juveniles may acclimate more easily to aquarium life than adults.

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

Best left in the wild!

Experience Level: Professional

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: 75 gallons

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

Specific Gravity: 1.020 -1.026

pH: 8.0 - 8.5

 Chaetodon bennetti (Bennett’s Butterflyfish, Bluelashed Butterflyfish)
Photo © Bob Fenner
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