The IUCN Red List of Threatened Species™
ISSN 2307-8235 (online)
IUCN 2008: T165902A6161394
Centropyge bicolor, Bicolor Angelfish
Assessment by: Pyle, R., Myers, R. & Rocha, L.A.
View on www.iucnredlist.org
Citation: Pyle, R., Myers, R. & Rocha, L.A. 2010. Centropyge bicolor. The IUCN Red List of Threatened
Species 2010: e.T165902A6161394. http://dx.doi.org/10.2305/IUCN.UK.20104.RLTS.T165902A6161394.en
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THE IUCN RED LIST OF THREATENED SPECIES™
Taxonomy
Kingdom
Phylum
Class
Order
Family
Animalia
Chordata
Actinopterygii
Perciformes
Pomacanthidae
Taxon Name: Centropyge bicolor (Bloch, 1787)
Synonym(s):
• Chaetodon bicolor
Common Name(s):
• English:
Bicolor Angelfish, Blue & Gold Angelfish, Two-colored Angelfish, Two coluored Angelfish
Assessment Information
Red List Category & Criteria:
Least Concern ver 3.1
Year Published:
2010
Date Assessed:
October 9, 2009
Justification:
Listed as Least Concern in view of its wide distribution, large overall population, collection for the
aquarium fish trade is not globally impacting the population, and there are no other potential major
threats.
Geographic Range
Range Description:
This species is widely distributed from the Indo-Malayan region eastward across the tropical Pacific
Ocean to the Line Islands, northward to southern Japan, and southward to New Caledonia (Pyle 2001). It
is found at depths of 1-25 m.
Country Occurrence:
Native: Australia; Brunei Darussalam; Cambodia; Christmas Island; Cocos (Keeling) Islands; Fiji; French
Polynesia; Guam; Indonesia; Japan; Kiribati; Malaysia; Maldives; Marshall Islands; Micronesia, Federated
States of ; Myanmar; Nauru; New Caledonia; Northern Mariana Islands; Oman; Palau; Papua New
Guinea; Philippines; Samoa; Singapore; Solomon Islands; Somalia; South Africa; Sri Lanka; Taiwan,
Province of China; Thailand; Tokelau; Tonga; Tuvalu; United States Minor Outlying Islands; Vanuatu; Viet
Nam
FAO Marine Fishing Areas:
Native: Indian Ocean - eastern, Pacific - eastern central, Pacific - northwest, Pacific - southwest, Pacific western central
© The IUCN Red List of Threatened Species: Centropyge bicolor – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
1
Distribution Map
© The IUCN Red List of Threatened Species: Centropyge bicolor – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
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Population
Populations are stable and common throughout most of its range, but it is rare at Palau to the eastern
Caroline Islands, Marianas Islands, and Marshall islands (G.R. Allen pers. comm. 2006). Vagrant to the
Line Islands (single specimen collected at Christmas Island, Kiribati). It is a common species at New
Guinea and on the Great Barrier Reef (Steene 1978).
Current Population Trend: Stable
Habitat and Ecology (see Appendix for additional information)
Areas of rich coral growth on seaward facing reefs, drop-offs and in lagoons. Also occurs in rubble areas.
Most commonly observed between 3-20 m. Swims close to the bottom grazing on algae, but never
strays far from shelter of reef crevices. Occurs singly, in pairs, or small aggregations (G.R. Allen pers.
comm. 2006). Forms harems of three to seven individuals (Pyle 2001).
Systems: Marine
Use and Trade (see Appendix for additional information)
This species is frequently exported through the aquarium trade (Pyle 2001).
Threats (see Appendix for additional information)
There appear to be no major threats to this species. Although it is often collected for the aquarium
trade, harvest levels are not considered to be impacting the global population. There is no substantial
habitat loss in the range of this species.
Conservation Actions (see Appendix for additional information)
There are no known species-specific conservation measures currently in place for this species. It is found
in several marine protected areas.
Credits
Assessor(s):
Pyle, R., Myers, R. & Rocha, L.A.
Reviewer(s):
Elfes, C., Polidoro, B., Livingstone, S. & Carpenter, K.E.
© The IUCN Red List of Threatened Species: Centropyge bicolor – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
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Bibliography
Allen, G.R., Steene, R. and Allen, M. 1998. A guide to angelfishes and butterflyfishes. Odyssey
Publishing/Tropical Reef Research.
Endoh, K. 2007. Angelfishes of the World. Two Little Fishies, Inc., Miami Gardens, Florida.
IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.4). Available at: http://www.iucnredlist.org.
(Accessed: 27 October 2010).
Pyle, R. 2001. Pomacanthidae: Angelfishes. In: K.E. Carpenter and V.H. Niem (eds), FAO species
identification guide for fishery purposes. The living marine resources of the Western Central Pacific.
Bony fishes part 3 (Menidae to Pomacentridae), pp. 3266-3286. FAO, Rome, Italy.
Randall, J.E., Williams, J.T., Smith, D.G., Kulbicki, M., Tham, G.M., Labrosse, P., Kronen, M., Clua, E. and
Mann, B.S. 2003. Checklist of the shore and epipelagic fishes of Tonga. Atoll Research Bulletin 502: 1-37.
Steene, R.C. 1978. Butterfly and angelfishes of the world. A.H. and A.W. Reed Pty Ltd., Australia.
Citation
Pyle, R., Myers, R. & Rocha, L.A. 2010. Centropyge bicolor. The IUCN Red List of Threatened Species 2010:
e.T165902A6161394. http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
Disclaimer
To make use of this information, please check the Terms of Use.
External Resources
For Images and External Links to Additional Information, please see the Red List website.
© The IUCN Red List of Threatened Species: Centropyge bicolor – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
4
Appendix
Habitats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Habitat
Season
Suitability
Major
Importance?
9. Marine Neritic -> 9.8. Marine Neritic - Coral Reef -> 9.8.1. Outer Reef
Channel
-
Suitable
Yes
9. Marine Neritic -> 9.8. Marine Neritic - Coral Reef -> 9.8.2. Back Slope
-
Suitable
Yes
9. Marine Neritic -> 9.8. Marine Neritic - Coral Reef -> 9.8.3. Foreslope
(Outer Reef Slope)
-
Suitable
Yes
9. Marine Neritic -> 9.8. Marine Neritic - Coral Reef -> 9.8.4. Lagoon
-
Suitable
Yes
Use and Trade
(http://www.iucnredlist.org/technical-documents/classification-schemes)
End Use
Local
National
International
Pets/display animals, horticulture
No
No
Yes
Threats
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Threat
Timing
Scope
Severity
Impact Score
5. Biological resource use -> 5.4. Fishing & harvesting
aquatic resources -> 5.4.1. Intentional use:
(subsistence/small scale)
Ongoing
Minority (50%)
Negligible declines
Low impact: 4
Stresses:
2. Species Stresses -> 2.1. Species mortality
Conservation Actions in Place
(http://www.iucnredlist.org/technical-documents/classification-schemes)
Conservation Actions in Place
In-Place Land/Water Protection and Management
Occur in at least one PA: Yes
Additional Data Fields
Distribution
Lower depth limit (m): 25
© The IUCN Red List of Threatened Species: Centropyge bicolor – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
5
Distribution
Upper depth limit (m): 1
Population
Population severely fragmented: No
© The IUCN Red List of Threatened Species: Centropyge bicolor – published in 2010.
http://dx.doi.org/10.2305/IUCN.UK.2010-4.RLTS.T165902A6161394.en
6
The IUCN Red List Partnership
The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species
Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN
Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation
International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas
A&M University; Wildscreen; and Zoological Society of London.
THE IUCN RED LIST OF THREATENED SPECIES™