Articles on this page are available in 1 other language: Chinese (Simplified) (4) (learn more)

Overview

Comprehensive Description

Biology

Occur in lagoon and seaward reefs. Feed exclusively on the polyps of the tubular Acropora corals. Swim in pairs and are territorial. Oviparous (Ref. 205). Form pairs during breeding (Ref. 205).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Distribution

Range Description

This species is distributed from Christmas Island (Australia) in the eastern Indian Ocean through Indonesia, New Guinea (Indonesia and Papua New Guinea), and the Philippines east to Fiji. It ranges as far north as southern Japan, to northern New South Wales (Australia) and New Caledonia in the south (Pyle 2001, G.R. Allen pers. comm. 2006). It is found between 1-20 m in depth. Range size ~31.7 million km2, from values estimated by Jones et al. (2002) based on projection of distribution maps from Allen et al. (1998).
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Western Pacific: Cocos-Keeling Islands in the eastern Indian Ocean and Indonesia to Fiji and Tonga (Ref. 53797), north to southern Japan, south to New Caledonia and New South Wales, Australia. Replaced by Chaetodon triangulum in the Indian Ocean (Ref. 37816).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Indo-West Pacific.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Physical Description

Morphology

Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 23 - 26; Analspines: 3; Analsoft rays: 20 - 22
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Size

Maximum size: 150 mm TL
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Max. size

16.0 cm TL (male/unsexed; (Ref. 48636))
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Diagnostic Description

Description: The sides are with a pattern of alternating cream and grey-brown to purplish chevron-shaped narrow bars. Three dark bars on the head, including one running across the eye (Ref. 1602). Snout length 2.6-3.0 in HL. Body depth 1.2-1.5 in SL (Ref. 90102).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is found within the clear waters of fringing reefs(Allen 1980). It is a territorial speciesand actively chases away other butterflyfishes encroaching on its food supply (Allen 1980, G.R. Allen pers. comm. 2006). Mostly occurs in pairs. It is an obligate corallivore and feeds predominantly on Acropora corals (e.g., Pratchett 2005), but it also occurs in habitats with no Acropora corals.

Systems
  • Marine
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Depth range based on 31 specimens in 1 taxon.
Water temperature and chemistry ranges based on 22 samples.

Environmental ranges
  Depth range (m): 1.75 - 27
  Temperature range (°C): 24.091 - 29.214
  Nitrate (umol/L): 0.019 - 0.622
  Salinity (PPS): 33.950 - 35.464
  Oxygen (ml/l): 4.336 - 4.932
  Phosphate (umol/l): 0.055 - 0.282
  Silicate (umol/l): 0.897 - 3.291

Graphical representation

Depth range (m): 1.75 - 27

Temperature range (°C): 24.091 - 29.214

Nitrate (umol/L): 0.019 - 0.622

Salinity (PPS): 33.950 - 35.464

Oxygen (ml/l): 4.336 - 4.932

Phosphate (umol/l): 0.055 - 0.282

Silicate (umol/l): 0.897 - 3.291
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
All rights reserved

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Environment

reef-associated; non-migratory; marine; depth range 5 - 20 m (Ref. 48636)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Depth range based on 31 specimens in 1 taxon.
Water temperature and chemistry ranges based on 22 samples.

Environmental ranges
  Depth range (m): 1.75 - 27
  Temperature range (°C): 24.091 - 29.214
  Nitrate (umol/L): 0.019 - 0.622
  Salinity (PPS): 33.950 - 35.464
  Oxygen (ml/l): 4.336 - 4.932
  Phosphate (umol/l): 0.055 - 0.282
  Silicate (umol/l): 0.897 - 3.291

Graphical representation

Depth range (m): 1.75 - 27

Temperature range (°C): 24.091 - 29.214

Nitrate (umol/L): 0.019 - 0.622

Salinity (PPS): 33.950 - 35.464

Oxygen (ml/l): 4.336 - 4.932

Phosphate (umol/l): 0.055 - 0.282

Silicate (umol/l): 0.897 - 3.291
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Depth: 5 - 15m.
From 5 to 15 meters.

Habitat: reef-associated. Occurs in lagoon and seaward reefs where it feeds exclusively on the polyps of the tubular @Acropora@ corals. Swims in pairs and is territorial.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© FishWise Professional

Source: FishWise Professional

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Trophic Strategy

Occur in lagoon and seaward reefs. Feed exclusively on the polyps of the tubular Acropora corals. Swim in pairs and are territorial.
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Partner Web Site: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Life History and Behavior

Life Cycle

Distinct pairing (Ref. 205).
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Chaetodon baronessa

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 9
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Genomic DNA is available from 1 specimen with morphological vouchers housed at Museum of Tropical Queensland
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Ocean Genome Legacy

Source: Ocean Genome Resource

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Rocha, L.A., Pyle, R., Myers, R., Craig, M.T. & Pratchett, M.

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

Contributor/s

Justification
While there have been declines documented in some areas, these are not believed to have substantially affected the global population. In addition, it has a wide distribution, large population and no apparent major threats other than coral loss. It is listed as Least Concern.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Population

Population
It has declined significantly on the Great Barrier Reef (Pratchett et al. 2006), where there has been coral loss and bleaching. However, in the Pacific bleaching has been patchy, and it is unclear to what extent this affects the global population.

In some areas it can be a very common species: in the northern Great Barrier Reef the estimated mean is 1.67 individuals per 200 m2 (Pratchett and Berumen 2008).


Population Trend
Decreasing
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Threats

Major Threats
Relies on live coral for food and recruitment, and has declined significantly following climate-induced coral depletion on the Great Barrier Reef (Pratchettet al.2006).However coral bleaching and coral loss has been patchy throughout the Pacific Ocean, and localized declines due to coral loss have not substantially affected the global population. There do not appear to be any major threats other than coral loss.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Least Concern (LC)
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Management

Conservation Actions

Conservation Actions
There appear to be no species-specific conservation measures in place. This species is present within marine protected areas. Monitoring of this species is needed in conjunction with coral monitoring.
Creative Commons Attribution Non Commercial Share Alike 3.0 (CC BY-NC-SA 3.0)

© International Union for Conservation of Nature and Natural Resources

Source: IUCN

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Relevance to Humans and Ecosystems

Benefits

Importance

aquarium: commercial
Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© FishBase

Source: FishBase

Trusted

Article rating from 0 people

Default rating: 2.5 of 5

Wikipedia

Eastern Triangle Butterflyfish

Not to be confused with the Triangle Butterflyfish (C. triangulum) and the Triangulate Butterflyfish (C. trifascialis).

The Eastern Triangle Butterflyfish, Chaetodon baronessa, is a species of butterflyfish (family Chaetodontidae). It is found in the central Indo-West Pacific region from the Cocos-Keeling Islands and Indonesia in the eastern Indian Ocean to Fiji and Tonga, north to southern Japan, south to New Caledonia and New South Wales in Australia.[2][3]

It grows to a maximum of 16 cm long.[4] The body has a pattern of alternating cream and grey-brown to purple chevron-shaped bars. There are three dark bars on the head, including one running across the eye.[2]

The Triangle Butterflyfish (C. triangulum) is its western sister species, replacing C. baronessa in the Indian Ocean. The triangle butterflyfishes and the Hooded Butterflyfish (C. larvatus) form the subgenus Gonochaetodon. If Chaetodon is split up as some researchers propose, this group might go into Megaprotodon as other high-backed and square-bodied species, but its exact relationships are still not well known.[5]

The Eastern Triangle Butterflyfish is found in seaward and lagoon coral reefs. They usually swim around in pairs and are territorial. This species feeds exclusively on the polyps of the tubular Acropora corals.[2]

Footnotes[edit source | edit]

  1. ^ Rocha, L.A., Pyle, R., Myers, R., Craig, M.T. & Pratchett, M. 2010. Chaetodon baronessa. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>. Downloaded on 10 September 2013.
  2. ^ a b c FishBase (2008)
  3. ^ http://eol.org/pages/1012773/details#distribution
  4. ^ http://www.fishbase.org/summary/5558
  5. ^ Fessler & Westneat (2007), Hsu et al. (2007)

References[edit source | edit]

  • Fessler, Jennifer L. & Westneat, Mark W. (2007): Molecular phylogenetics of the butterflyfishes (Chaetodontidae): Taxonomy and biogeography of a global coral reef fish family. Mol. Phylogenet. Evol. 45(1): 50–68. doi:10.1016/j.ympev.2007.05.018 (HTML abstract)
  • FishBase (2008): Chaetodon baronessa. Version of 2008-JUL-24. Retrieved 2008-SEP-01.
  • Hsu, Kui-Ching; Chen, Jeng-Ping & Shao, Kwang-Tsao (2007): Molecular phylogeny of Chaetodon (Teleostei: Chaetodontidae) in the Indo-West Pacific: evolution in geminate species pairs and species groups. Raffles Bulletin of Zoology Supplement 14: 77-86. PDF fulltext
Creative Commons Attribution Share Alike 3.0 (CC BY-SA 3.0)

Source: Wikipedia

Unreviewed

Article rating from 0 people

Default rating: 2.5 of 5

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!