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Chaetodon semilarvatus

Abstract

Chaetodon semilarvatus has most recently been assessed for The IUCN Red List of Threatened Species in 2009. Chaetodon semilarvatus is listed as Least Concern.


The Red list Assessmenti

Last assessed

09 October 2009

Scope of assessment

Global

Population trend

Stable

Number of mature individuals

Population in detail

Habitat and ecology

Marine Neritic

Habitat and ecology in detail

Geographic range

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  • Extant (resident)

International Union for Conservation of Nature (IUCN) 2010. Chaetodon semilarvatus. The IUCN Red List of Threatened Species. Version 2022-2
Geographic range in detail

Taxonomy

Kingdom

Animalia

Phylum

Chordata

Class

Actinopterygii

Order

Perciformes

Family

Chaetodontidae

Genus

Chaetodon

Scientific name

Chaetodon semilarvatus

Authority

Cuvier, 1831

Synonyms

Chaetodon melanopoma Playfair, 1867

Common names

English

Addis Butterflyfish, Bluecheek Butterflyfish, Bluecheek Butterflyfish, Golden Butterflyfish, Redlined Butterflyfish, Yellow Butterflyfish

French

Chaetodon à demi masquè

Danish

Blåkindet fanefisk

German

Gelber Rotmeer-Falterfisch

Swedish

Rödahavsfjärilsfisk

Taxonomic sources

Identification Information

Taxonomic notes

Assessment Information

IUCN Red List Category and Criteria

Least Concern 

ver 3.1

Date assessed

09 October 2009

Year published

2010

Annotations

Needs updating

Year last seen

Previously published Red List assessments

    Regional assessments

      Assessor(s)

      Myers, R. & Pratchett, M.

      Reviewer(s)

      Elfes, C., Polidoro, B., Livingstone, S. & Carpenter, K.E.

      Contributor(s)

      Facilitator(s) / Compiler(s)

      Partner(s) / Institution(s)

      Authority / Authorities

      Justification

      While there have been no declines documented, this species feeds predominantly on live coral, which may make it susceptible to extensive coral loss. However, it has a relatively wide distribution, apparently large population and no obvious major threats other than coral loss. It is listed as Least Concern.

      Geographic Range

      Native

      Extant (resident)

      Djibouti; Egypt; Eritrea; Israel; Jordan; Saudi Arabia; Somalia; Sudan; Yemen

      Presence Uncertain & Vagrant

      Oman

      Number of locations

      Upper depth limit

      1 metres

      Lower depth limit

      20 metres

      FAO Fishing Areas

      OriginLocations
      NativeIndian Ocean - western

      Estimated area of occupancy (AOO) (km²)

      Continuing decline in area of occupancy (AOO)

      Extreme fluctuations in area of occupancy (AOO)

      Estimated extent of occurrence (EOO) (km²)

      Continuing decline in extent of occurrence (EOO)

      Extreme fluctuations in extent of occurrence (EOO)

      Continuing decline in number of locations

      Extreme fluctuations in the number of locations

      Range Description

      This species is endemic to the Red Sea and Gulf of Aden, northeast to the southern coast of Oman (Allen 1980, G.R. Allen pers. comm. 2006). It has been recorded at depths of 1-20 m.

      Population

      Current population trend

      Stable

      Number of mature individuals

      Population severely fragmented

      No

      Continuing decline of mature individuals

      Extreme fluctuations

      No. of subpopulations

      Continuing decline in subpopulations

      Extreme fluctuations in subpopulations

      All individuals in one subpopulation

      No. of individuals in largest subpopulation

      Description

      It is generally common with stable populations (G.R. Allen pers. comm. 2006). There is no evidence to suggest any declines.

      Habitat and Ecology

      System

      Habitat type

      Marine Neritic

      Generation length (years)

      Congregatory

      Movement patterns

      Continuing decline in area, extent and/or quality of habitat

      Habitat and Ecology

      This species is associated with areas of rich coral growth in relatively shallow water (G.R. Allen pers. comm. 2006). It usually occurs in pairs or as larger aggregations of up to about 20 animals. Generally rests beneath Acropora plate corals during the day becoming active in late afternoon. This species is an obligate corallivore.

      Classification scheme

      HabitatsSeasonSuitabilityMajor importance
      9. Marine Neritic9.8. Marine Neritic - Coral Reef9.8.1. Outer Reef Channel-SuitableYes
      9.8.2. Back Slope-SuitableYes
      9.8.3. Foreslope (Outer Reef Slope)-SuitableYes
      9.8.4. Lagoon-SuitableYes

      Threats

      Biological resource use

      • Fishing & harvesting aquatic resources

      Climate change & severe weather

      • Habitat shifting & alteration

      Threats

      This species generally feeds on live coral, and may therefore decline in abundance following climate-induced coral depletion (Pratchett et al. 2008). Currently there has been no documented declines associated with coral loss, and there appear to be no other major threats to this species.

      Classification scheme

      ThreatsTimingStressesScopeSeverityInvasive speciesVirus
      5. Biological resource use5.4. Fishing & harvesting aquatic resources5.4.1. Intentional use: (subsistence/small scale) [harvest]Ongoing
      2. Species Stresses2.1. Species mortality
      		Minority (<50%)Negligible declines
      11. Climate change & severe weather11.1. Habitat shifting & alterationOngoing
      1. Ecosystem stresses1.2. Ecosystem degradation
      		UnknownUnknown

      Use and Trade

      Pets/display animals, horticulture

      Local: ✘
      National: ✘
      International: ✔

      Use and Trade

      This species is sometimes collected for the aquarium trade (G.R. Allen pers. comm. 2006).

      Conservation Actions

      Conservation Actions

      There appear to be no species-specific conservation measures in place. This species is believed to be present within marine protected areas. Monitoring of this species is needed in conjunction with coral monitoring, as well as determination of the degree of co-dependence between this species and corals.

      Conservation actions classification scheme

      Conservation Actions NeededNotes

      Research classification scheme

      Research NeededNotes
      1. Research1.2. Population size, distribution & trends
      3. Monitoring3.1. Population trends
      3.4. Habitat trends

      Bibliography

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

      Bouhlel, M. 1988. Poissons de Djibouti. Dubai Printing Press, Dubai.

      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: http://www.iucnredlist.org. (Accessed: 27 October 2010).

      Pratchett, M.S., Munday, P.L., Wilson, S.K., Graham, N.A.J., Cinner, J.E., Bellwood, D.R., Jones, G.P., Polunin, N.V.C. and McClanahan, T.R. 2008. Effects of climate-induced coral bleaching on coral reef fishes - Ecological and economic consequences. Oceanography and Marine Biology: An Annual Review 46: 251-296.

      Randall, J.E. 1995. Coastal fishes of Oman. University of Hawaii Press, Honolulu, Hawaii.

      Righton, D., Kemp, J. and Ormond, R. 1996. Biogeography, community structure and diversity of Red Sea and western Indian Ocean butterflyfishes. Journal of the Marine Biological Association of the United Kingdom 76(1): 223-228.

      External Data

      Images and External Links

      iNaturalist.org observations

      Search sites for species

      GooglePicSearchCalPhotosFishBaseNatureServe ExplorerGBIF - Global Biodiversity Information Facility Encyclopedia of LifeCatalogue of Life (Species2000)WoRMS - World Register of Marine Species

      CITES Legislation from Species+

      Data Source

      The information below is from the Species+ website.

      Studies and Actions from Conservation Evidence

      Data Source

      The information below is from the Conservation Evidence website.

      Search terms: "Chaetodon semilarvatus", "Chaetodontidae"

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