Bicolor Angelfish, Centropyge bicolor (Bloch 1787)


Other Names: Bicoloured Angelfish, Black And Gold Angel-fish, Blue & Gold Angelfish, Blue And Gold Angelfish

A Bicolor Angelfish, Centropyge bicolor, at South West Rocks, New South Wales, May 2013. Source: Ian Shaw / iNaturalist.org. License: CC by Attribution-NonCommercial

Summary:
An easily recognised pygmy angelfish with the head and anterior body bright yellow, the rear a brilliant deep blue, a broad blue bar above the eye, and a yellow caudal fin.
Bicolor Angelfish live haremic groups containing a male and up to 7 females in descending size order. If the male disappears, the top ranking female will change sex and assume leadership of the harem.

Cite this page as:
Bray, D.J. 2017, Centropyge bicolor in Fishes of Australia, accessed 15 Nov 2018, http://fishesofaustralia.net.au/home/species/638

Bicolor Angelfish, Centropyge bicolor (Bloch 1787)

More Info


Distribution

Recorded in the Australian region from Quobba, Rowley Shoals and Scott Reef, Western Australia, Ashmore Reef, Timor Sea, and reefs in the Torres Strait, Queensland, with juveniles to at least Sydney, New South Wales; also reefs in the Coral Sea.

Elsewhere, the species is widespread in the tropical, east-Indo-west-central Pacific, from the Indo-Malayan region to the Line Islands, northward to southern Japan, and southward to New Caledonia.

Inhabits rich coral areas on exposed and semi-exposed reef slopes, drop-offs channels and lagoons, usually in depths below 5 metres. Bicolor Angelfishes swim near the bottom, never venturing far from the shelter of holes and crevices in the reef.

Feeding

A benthic omnivore - feeds on algae, crustaceans, polychaete worms and other invertebrates. 

Biology

Bicolor Angelfish are protogynous hermaphrodites, meaning that they are initially all female and are capable of changing sex to become males. Throughout the year, males maintain a harem of up to seven adult and immature females. Spawning occurs from November to March.
The females live in a social heirarchy. If the male disappears, the top ranking female will change sex to become a male and assume leadership of the harem.

Fisheries

Common in the aquarium fish industry, although difficult to keep in captivity.

Species Citation

Chaetodon bicolor Bloch, 1787,  Naturgesch. ausländ. Fische 3: 94. Type locality: East Indies.

Author

Bray, D.J. 2017

Bicolor Angelfish, Centropyge bicolor (Bloch 1787)

References


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Allen, G.R. & Erdmann, M.V. 2012. Reef fishes of the East Indies. Perth : Tropical Reef Research 3 vols, 1260 pp.

Allen, G.R. & R.C. Steene. 1988. Fishes of Christmas Island Indian Ocean. Christmas Island Natural History Association, Christmas Island, Indian Ocean, 6798, Australia. 197 pp.

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

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Ang, T.Z. 2010. Social conflict resolution in groups of the angelfish Centropyge bicolor, Ph.D. thesis, University of Cambridge.

Ang, T.Z. & Manica, A. 2010. Aggression, segregation and stability in a dominance hierarchy. Proceedings of the Royal Society B 277: 1337-1343.

Ang, T.Z. & Manica, A. 2010. Unavoidable limits on group size in a body size-based linear hierarchy. Behavioural Ecology doi:10.1093/beheco: arq062. 

Ang, T.Z. & Manica, A. 2010. Benefits and costs of dominance in the angelfish Centropyge bicolor. Ethology 116: 1-11.

Ang, T.Z. & Manica, A. 2011. Effect of the presence of subordinates on dominant female behaviour and fitness in hierarchies of the dwarf angelfish Centropyge bicolor. Ethology 117: 1111-1119.

Bauer, J.A. & Bauer, S.E. 1981. Reproductive-biology of pigmy angelfishes of the genus Centropyge (Pomacanthidae). Bulletin of Marine Science 31: 495-513.

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Konow, N. & D.R. Bellwood. 2011. Evolution of high trophic diversity based on limited functional disparity in the feeding apparatus of marine angelfishes (f. Pomacanthidae). PLoS One 6(9) e 24113. doi: 10.1371/journal.pone.0024113. 

Konow, N., D.R. Bellwood, P.C. Wainwright & A.M. Kerr. 2008. Evolution of novel jaw points promote trophic diversity in coral reef fishes, Biological Journal of the Linnean Society 93: 545-555. 

Marshall, T.C. 1964. Fishes of the Great Barrier Reef and Coastal Waters of Queensland. Sydney : Angus & Robertson 566 pp. 136 pls.

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.

Pyle, R., Myers, R. & Rocha, L.A. 2010. Centropyge bicolor. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <www.iucnredlist.org>. Downloaded on 21 February 2014.

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Quick Facts


CAAB Code:37365022

Biology:Able to change sex

Conservation:IUCN Least Concern

Depth:1-25 m

Fishing:Aquarium fish

Habitat:Reef associated

Max Size:15 cm SL

Species Image Gallery

Species Maps

CAAB distribution map