Chaetodon declivis


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Chaetodon declivis
Species Authority: Randall, 1975
Common Name(s):
English Marquesan Butterflyfish, Marquesas Butterflyfish, Marquesas Butterflyfish

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-10-08
Assessor(s): Pyle, R., Myers, R. & Pratchett, M.
Reviewer(s): Elfes, C., Polidoro, B., Livingstone, S. & Carpenter, K.E.
Although it has a relatively restricted range, there are no major threats. The population is unlikely to be declining. The species is listed as Least Concern.

Geographic Range [top]

Range Description:This species is known only from the Marquesas Islands (French Polynesia), Phoenix Islands (Kiribati), and Line Islands (Kiribati and USA) in the South Pacific Ocean (G.R. Allen pers. comm. 2006). It is found at depths of 20-80 m.
French Polynesia; Kiribati; United States Minor Outlying Islands (US Line Is.)
FAO Marine Fishing Areas:
Pacific – eastern central
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: It is relatively common at depths of 25 to 40 m. The population at Christmas Island (in the Line Islands) is believed to be stable.
Population Trend: Stable

Habitat and Ecology [top]

Habitat and Ecology: Found on rocky reef and coral reef slopes and steep walls adjacent to sandy bottoms, usually below 20-30 m (G.R. Allen pers. comm. 2006).
Systems: Marine

Use and Trade [top]

Use and Trade: In 2001-2006 it was frequently collected for the international pet trade, however the market has decreased significantly in recent years (R. Pyle pers. comm. 2009).

Threats [top]

Major Threat(s):

There appear to be no major threats to this species. Collection is limited and is not considered to be impacting the global population.

Conservation Actions [top]

Conservation Actions:

There appear to be no species specific conservation measures in place. This species is believed to be present within a number of marine protected areas.

Bibliography [top]

Allen, G.R. 1980. Butterfly and angelfishes of the world. Wiley, New York.

Burgess, W.E. 1978. Butterflyfishes of the world. A monograph of the Family Chaetodontidae. T.F.H. Publications, Neptune City, New Jersey.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.4). Available at: (Accessed: 27 October 2010).

Lieske, E. and Myers, R. 1994. Collins Pocket Guide. Coral reef fishes. Indo-Pacific and Caribbean including the Red Sea. Harper Collins Publishers.

Pyle, R. 2001. Chaetodontidae. Butterflyfishes. 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. Volume 5. Bony fishes part 3 (Menidae to Pomacentridae), pp. 3224-3265. FAO, Rome.

Citation: Pyle, R., Myers, R. & Pratchett, M. 2010. Chaetodon declivis. In: The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 30 August 2015.
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