Pentaceros japonicus 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Perciformes Pentacerotidae

Scientific Name: Pentaceros japonicus Steindachner, 1883
Common Name(s):
English Japanese Armorhead, Japanese Boarfish

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2009-02-04
Assessor(s): Nakabo, T.
Reviewer(s): Collen, B., Richman, N., Beresford, A., Chenery, A. & Ram, M.
Contributor(s): De Silva, R., Milligan, H., Lutz, M., Batchelor, A., Jopling, B., Kemp, K., Lewis, S., Lintott, P., Sears, J., Wilson, P. & Smith, J. and Livingston, F.
Pentaceros japonicus has been assessed as Least Concern.  Although harvested as a commercial food source, this threat is unlikely to be impacting this species throughout its entire broad distribution.  Pentaceros japonicus is also harvested for the aquarium trade, but this is not considered a major threat at present and is probably only occurring on a localised scale.  Monitoring of the harvest levels and extent of harvest is needed in case these threats intensify or become more widespread in the future.

Geographic Range [top]

Range Description:Pentaceros japonicus is distributed from Pacific coast of southern Japan (Boso Peninsula southward to Amami Island), Ogasawara Islands, Kyushu-Palau Ridge, Emperor's Seamouts Chain (Pers. comm T. Nakabo 2009).
Countries occurrence:
FAO Marine Fishing Areas:
Pacific – western central; Pacific – southwest; Pacific – northwest
Additional data:
Lower depth limit (metres):600
Upper depth limit (metres):100
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no population information available for Pentaceros japonicus.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:The armourhead, Pentaceros japonicus, is a benthopelagic species that has a depth range of 100–600 m.  This species occurs over seamounts. Its spawning season is from Autumn to Winter (Pers. Comm. T. Nakabo 2009).

Use and Trade [top]

Use and Trade: Although harvested from the wild, this species may be bred in captivity for the aquarium trade and is used in small fisheris (Pers. Comm. T. Nakabo 2009).

Threats [top]

Major Threat(s): Pentaceros japonicus is a commercially important species and it is roughly estimated that the annual global catch of this species is 100,000–500,000 tons (Froese and Sampang 2004).

Pentaceros japonicus is also harvested for the aquarium trade, although at present this is not considered a major threat to this species.

Conservation Actions [top]

Conservation Actions: There are no species-specific conservation measures in place for Pentaceros japonicus, however its distribution may coincide with numerous marine protected areas.  Monitoring of the harvest levels and extent of harvest of this species is needed.

Errata [top]

Errata reason: This errata assessment has been created because the map was accidentally left out of the version published previously.

Citation: Nakabo, T. 2010. Pentaceros japonicus (errata version published in 2017). The IUCN Red List of Threatened Species 2010: e.T155222A115287471. . Downloaded on 22 May 2018.
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