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Overview

Comprehensive Description

Biology

Oviparous, distinct pairing during breeding (Ref. 205). Minimum depth from Ref. 58018.
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Distribution

Range Description

This species is only known from four locations in the Western Central Pacific: Banggai Islands and Togean Island, Indonesia, Checkfield Bank, New Caledonia, and the Great Barrier Reef, Australia (Allen and Adrim 2003, Cappo et al. 2007, Speare and Stowar 2007). As this species is found in deeper waters, it is not well-known, but its distribution is likely wider than these three locations.
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Western Pacific/
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Western Central Pacific: Coral Sea and Indonesia.
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Physical Description

Size

Max. size

10.3 cm SL (male/unsexed; (Ref. 28618))
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Type Information

Paratype for Choerodon gomoni Allen & Randall
Catalog Number: USNM 366799
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): M. Kulbicki & et al.
Year Collected: 1988
Locality: Chesterfield Bank, Chesterfield Islands, New Caledonia, Coral Sea, Pacific
Depth (m): 76 to 76
Vessel: Alis
  • Paratype: Allen, G. R. & Randall, J. E. 2002. Aqua: Journal of Ichthyology and Aquatic Biology. 5 (3): 110, figs 1-2.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This species is demersal and has been recorded at a depth of 30-82 m (Bogutskaya 2007). There is no information on this species habitat requirements, biology or ecology. The maximum size of this species is 10.3 cm SL (Randall 1997).

Systems
  • Marine
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Environment

demersal; marine; depth range ? - 82 m (Ref. 46206)
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Depth range based on 66 specimens in 1 taxon.
Water temperature and chemistry ranges based on 39 samples.

Environmental ranges
  Depth range (m): 16 - 82
  Temperature range (°C): 23.246 - 26.525
  Nitrate (umol/L): 0.149 - 2.089
  Salinity (PPS): 35.095 - 35.568
  Oxygen (ml/l): 4.484 - 4.801
  Phosphate (umol/l): 0.083 - 0.203
  Silicate (umol/l): 0.777 - 1.309

Graphical representation

Depth range (m): 16 - 82

Temperature range (°C): 23.246 - 26.525

Nitrate (umol/L): 0.149 - 2.089

Salinity (PPS): 35.095 - 35.568

Oxygen (ml/l): 4.484 - 4.801

Phosphate (umol/l): 0.083 - 0.203

Silicate (umol/l): 0.777 - 1.309
 
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Life History and Behavior

Life Cycle

Oviparous, distinct pairing during breeding (Ref. 205).
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Choerodon gomoni

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 8
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2010

Assessor/s
Shea, S. & Liu, M.

Reviewer/s
Sadovy, Y. & Carpenter, K.E.

Contributor/s

Justification
This species is only known from a few locations in the western Pacific. Although little is known about its population status, habitat requirement, reproduction, recruitment, life history, or ecology, it is a deep water species and there are no known threats. It is listed as Least Concern.
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Population

Population
There is no population information available for this species. It is a deeper water species, and has not been commonly observed.

Population Trend
Unknown
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Threats

Major Threats
There are no major threats known to this species. Although this species was observed in an underwater biodiversity survey and was identified as being susceptible to trawling given its depth and habitat association in the Great Barrer Reef (Pitcher et al. 2007), it is probably not threatened in many areas of Australia due to the depth (to 82 m) of its occurrence (Bogutskaya 2007) and the maximum size of this species recorded at 10.3 cm SL (Randall 1997), which means it does not the current minimum legal capture size of 40 cm in many areas of Australia (Queensland Government, Government of Western Australia 2008, 2008a).
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Least Concern (LC)
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Management

Conservation Actions

Conservation Actions
This species is observed in the Great Barrier Reef Marine Park through baited underwater video surveys (Cappo et al. 2007, Speare and Stowar 2007).

In Queensland, the minimum legal size for tuskfish (Choerodon spp.) is 30 cm and daily bag limit is five in total for all Choerodon species per angler, in addition, closed season for fishing applies to coral reef finfish (Queensland Government).

This species is poorly known, as it occurs in deeper waters and has not been well-studied. More information is needed on its distribution, population status, habitat requirements, biology, ecology, and major threats.
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