By Bob Goemans
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Chaetodon baronessa

Cuvier, 1831

Eastern Triangular Butterflyfish

Not Reef Tank Suitable

Not Suitable for Fish-Only Tank

Range: Indo-West Pacific Ocean: Cocos-Keeling Island east to Indonesia and Fiji, north to Southern Japan and south to New Caledonia.

Size: 5 inches (12 cm)

Natural Environment: Inhabits shallow areas encompassing rich coral growths in depths between 10 to 50 feet (3 – 15 m) and feeds exclusively on Acropora polyps.

General Husbandry: Quite attractive, as its body has numerous alternating whitish and grey to purple chevon-shaped bars, and three dark brown bars on the head, with one running through the eye.

Nevertheless, because it feed solely on live coral polyps, its best this species not be collected for the aquarium trade.


    Order: Perciformes

    Suborder: Percoidei

    Family: Chaetodontidae

    Genus: Chaetodon

FYI: Experience Level: Professional

Temperament: Peaceful

Diet: Corallivore

Coral Safe: No

Invertebrate Safe: With caution

Temperature Range: 74 - 82°F (23 – 28°C)

 Chaetodon baronessa (Eastern Triangular Butterflyfish)
Photo © Bob Goemans
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