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Choerodon fasciatus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA ACTINOPTERYGII PERCIFORMES LABRIDAE

Scientific Name: Choerodon fasciatus
Species Authority: (Günther, 1867)
Common Name(s):
English Harlequin tuskfish
Synonym(s):
Choerodon balarensis Herre 1950
Choerodon balarensis Herre 1950
Lienardella fasciata (Günther, 1867)
Lienardella fasciata (Günther, 1867)
Xiphochilus fasciatus Günther, 1867
Xiphochilus fasciatus Günther, 1867
Taxonomic Notes: C. balarensis has been synonymized with this species (Parenti and Randall 2000).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2010
Date Assessed: 2008-04-12
Assessor(s): To, A., Liu, M. & Sadovy, Y.
Reviewer(s): Craig, M.T. & Carpenter, K.E.
Justification:
This species is widespread in the western Pacific, and is common in at least parts of its range. Although it is targeted for the aquarium trade, there is no current indication of widespread population decline and there are no other major threats known to this species. It is listed as Least Concern. However, more research is needed on harvest levels for the aquarium trade and the sustainability of current quotas in many parts of its range.

Geographic Range [top]

Range Description: This species is occurs from East Africa including Madagascar and the Maldives to New Caledonia and Fiji, and from the Ryukyu Islands to Australia.
Countries:
Native:
Australia; Fiji; Japan; New Caledonia; Palau; Philippines; Taiwan, Province of China
FAO Marine Fishing Areas:
Native:
Pacific – northwest; Pacific – southwest; Pacific – western central
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: There is no population information available for this species in the majority of its range. It is considered common in at least some of its range, including Australia and New Caledonia.

In New Caledonia, a total of 368 individuals were counted in various UVC surveys with body sizes of 10-43 cm TL. In two stations, two individuals were caught with total body weight of 272 g (M. Kulbicki pers. comm. 2008).

In Fiji, this species is rare, only one individual was recorded with 22 cm TL during various UVC surveys (M. Kulbicki pers. comm. 2008).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This species is solitary and inhabits seaward reefs. It feeds on mollusks, crustaceans, various worms and echinoderms. It is territorial, and ranges over a large area of reef (Lieske and Myers 1994), and lives down to 35 m (Shao 2005).

This species is reported to be monogamous (Whiteman and Côté 2004). Other information on its reproductive biology or ecology is lacking.
Systems: Marine

Use and Trade [top]

Use and Trade: This species is mainly collected as aquarium fish. In Queensland, Australia this is a relatively expensive aquarium fish species among all wrasses in the ornamental fish trade, costing about 26 USD for each fish (Ryan and Clarke 2005).

This species is also of minor importance for the live reef fish food trade.

Threats [top]

Major Threat(s): There are no major threats known to this species. Due to its popularity in the aquarium trade, pressure for collection could represent a local threat to this species in some areas. However, the level of collection for aquarium trade relative to natural abundance is unknown.

Conservation Actions [top]

Conservation Actions: There are no species specific conservation measures. However, this species distribution overlaps a number of Marine Protected Areas within its range.

In New Caledonia for example, marine reserves are established within the natural range of this species (Wantiez et al. 1997) These reserves cover reef habitat which are suitable to C. fasciatus (Lieske and Myers 1994). Though this species has not been recorded within these reserves, it is very likely that these no-take areas can provide protection to C. fasciatus. About 60 marine parks (with no-fishing areas and buffer zones) are established in Japan including the Okinawa Kaigan Marine Park in Ryukyu where this species may occur (UNEP-WCMC 2008). Tung Sha Tao (Pratas Island), which is now a protected area, may also offer protection to this species though its occurrence in the area needs further survey. C. fasciatus, which may also occur among Western Pacific Islands, may be protected by the newly established Phoenix Island Protected Area in Kiribati, which is currently the largest marine protected area in the world.

In Australia, a minimum size of 300 mm TL and a bag limit of six fish apply to all species in this genus (Department of Primary Industries and Fisheries 2008a). There are three, nine-day closure to the taking of all coral reef fishes including Choerodon species in Queensland east coast waters, which are in October, November and December each year around the new moon phase (Department of Primary Industries and Fisheries 2008b). Both recreational and licensed commercial aquarium fish collectors are allowed to operate within certain zones in the Great Barrier Reef (Ryan and Clarke 2005). While SCUBA and hookah are allowed for commercial collectors, recreational collectors can only use mask and snorkel for collecting aquarium fish. There are also gear restrictions (only by hands, small fishing lines or seine-nets) and bag limits (20 fish per person) on aquarium fish collection for both recreational and commercial collectors (Ryan and Clarke 2005). However, there is no specific management or regulation on C. fasciatus.

Citation: To, A., Liu, M. & Sadovy, Y. 2010. Choerodon fasciatus. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 22 September 2014.
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