Triangular Butterflyfish, Chaetodon baronessa Cuvier 1831

Other Names: Baroness Butterflyfish, Baronessa Butterflyfish, Eastern Triangle Butterflyfish , Eastern Triangular Butterflyfish, Herringbone Coralfish, Pacific Triangular Butterflyfish, Triangular Coralfish

A Triangular Butterflyfish, Chaetodon baronessa, at Lomaiviti, Fiji. Source: Mark Rosenstein / License: CC BY Attribution-Noncommercial-ShareAlike

A dark greyish butterflyfish with darker chevron markings on the side, a birght yellow head with three reddish-brown bar including one on the snout, and a bright yellow submarginal band on the tail.

Cite this page as:
Dianne J. Bray, Chaetodon baronessa in Fishes of Australia, accessed 17 Apr 2024,

Triangular Butterflyfish, Chaetodon baronessa Cuvier 1831

More Info


Rowley Shoals and Scott Reef , Western Australia, Ashmore Reef, Timor Sea, and the northern Great Barrier Reef to Moreton Bay, Queensland; also Cocos (Keeling) Islands and Christmas Island in the Indian Ocean. the species occurs elsewhere in the tropical, east-Indo-west Pacific.

Inhabits shallow reefs, often around Acropora plate corals.


An obligate corallivore - feeds on coral polyps.


Although occasionally collected for the aquarium trade, the Triangular Butterflyfish is difficult to maintain in captivity due to its diet of live corals.


Species Citation

Chaetodon baronessa Cuvier, 1831, Hist. Nat. Poiss. 7: 45. Type locality: unknown.


Dianne J. Bray

Triangular Butterflyfish, Chaetodon baronessa Cuvier 1831


Allen, G.R. 1997. Marine Fishes of Tropical Australia and South-east Asia. Perth : Western Australian Museum 292 pp. 106 pls.

Allen, G.R., Steene, R. & Allen, M. 1998. A Guide to Angelfishes & Butterflyfishes. Cairns : Odyssey Publishing/Tropical Reef Research 250 pp. figs.

Allen, G.R., Steene, R.C. & Orchard, M. 2007. Fishes of Christmas Island. Christmas Island : Christmas Island Natural History Association 2 edn, 284 pp.

Burgess, W.E. 1978. Butterflyfishes of the World. New Jersey : T.F.H. Publications Inc. 832 pp. figs.

Coleman, N. 1981. Australian Sea Fishes North of 30°S. Lane Cove, NSW : Doubleday Australia Pty Ltd 297 pp.

Cuvier, G.L. in Cuvier, G.L. & Valenciennes, A. 1831. Histoire Naturelle des Poissons. Paris : Levrault Vol. 7 531 pp. pls 170-208.

Grant, E.M. 1975. Guide to Fishes. Brisbane : Queensland Government, Co-ordinator General’s Department 640 pp.

Grant, E.M. 2002. Guide to Fishes. Redcliffe : EM Grant Pty Ltd 880 pp.

Johnson, J.W. 2010. Fishes of the Moreton Bay Marine Park and adjacent continental shelf waters, Queensland, Australia. pp. 299-353 in Davie, P.J.F. & Phillips, J.A. Proceedings of the Thirteenth International Marine Biological Workshop, The Marine Fauna and Flora of Moreton Bay. Memoirs of the Queensland Museum 54(3)

Kuiter, R.H. 1996. Guide to Sea Fishes of Australia. A comprehensive reference for divers and fishermen. Sydney, NSW, Australia : New Holland Publishers xvii, 434 pp.

Kuiter, R.H. 2002. Butterflyfishes, Bannerfishes and their Relatives. Chorleywood, U.K. : TMC Publishing 208 pp.

Pyle, R. 2001. Chaetodontidae, Pomacanthidae. pp. 3224-3286 in Carpenter, K.E. & Niem, V.H. (eds). The Living Marine Resources of the Western Central Pacific. FAO Species Identification Guide for Fisheries Purposes. Rome : FAO Vol. 5 2791-3379 pp.

Randall, J.E., Allen, G.R. & Steene, R. 1990. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 507 pp. figs.

Randall, J.E., Allen, G.R. & Steene, R. 1997. Fishes of the Great Barrier Reef and Coral Sea. Bathurst : Crawford House Press 557 pp. figs.

Steene, R.C. 1978. Butterfly and Angelfishes of the World. Australia. Sydney : A.H. & A.W. Reed Vol. 1 144 pp. 216 figs.

Quick Facts

CAAB Code:37365034

Conservation:IUCN Least Concern

Depth:1-20 m

Feeding:Coral polyps only

Fishing:Aquarium fish (uncommon)

Habitat:Reef associated

Max Size:15 cm TL

Species Image Gallery

Species Maps

CAAB distribution map