Grammatorcynus bicarinatus


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Grammatorcynus bicarinatus
Species Authority: (Quoy & Gaimard, 1825)
Common Name/s:
English Shark Mackerel, Double-lined Mackerel, Largescale Tunny, Mackerel, Salmon Mackerel, Large-scaled Tunny
French Tazard à Larges écailles, Thazard Requin
Spanish Carite-cazón, Carite Cazón
Grammatorycnus bicarinatus (Quoy & Gaimard, 1825)
Thynnus bicarinatus Quoy & Gaimard, 1825
Taxonomic Notes: Before 1983, this species was sometimes confused with Grammatorcynus bilineatus (Collette and Nauen 1983).

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2011
Date Assessed: 2009-12-05
Assessor/s: Collette, B., Fox, W. & Nelson, R.
Reviewer/s: Russell, B. & Polidoro, B.
This species is restricted to northern Australia. There is a directed fishery for this species in Queensland, but there is no population information available. However, at least a portion of this species range overlaps the Great Barrier Reef Marine Protected Area. It is listed as Least Concern. More research is needed on this species biology, population, and likely distribution in the northern part of Australia.
For further information about this species, see TUNAS_SkiJumpEffect.pdf.
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Geographic Range [top]

Range Description:

This species is found in the western Pacific and is known only from the northern coast of Australia, south to Shark Bay in Western Australia, along the east coast of Queensland south to northern New South Wales (Collette and Gillis 1992).

Australia; Papua New Guinea
FAO Marine Fishing Areas:
Indian Ocean – eastern; 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. The only fishery directed at this species is in Queensland (Collette and Nauen 1983).
Population Trend: Unknown

Habitat and Ecology [top]

Habitat and Ecology: This species is reef-associated and oceanodromous. It forms schools near individual bays and reefs in Barrier Reef waters. With the rising tide, they move into shallow water over the reef flats, feeding on schools of clupeoid fishes that concentrate there.

Maximum Size is 130 cm fork length (FL), 11.5 kg (Randall et al. 1990). The all-tackle angling record is of a 12.3 kg fish taken off Bribie Island, Queensland, Australia in 1989 (IGFA 2011).
Systems: Marine

Threats [top]

Major Threat(s): This is a commercial species with a directed fishery where it is used as bait in Queensland, Australia.

Conservation Actions [top]

Conservation Actions: At least a portion of this species range overlaps the Great Barrier Reef Marine Protected Area. More research is needed on this species biology and population trends, especially as there is a directed fishery for this species in Queensland.
Citation: Collette, B., Fox, W. & Nelson, R. 2011. Grammatorcynus bicarinatus. In: IUCN 2013. IUCN Red List of Threatened Species. Version 2013.2. <>. Downloaded on 20 April 2014.
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