Australia country information

Common names: Bluefin tuna, Longtail tuna, Northern bluefin
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: restricted | Ref:
Uses: no uses
Comments: Reported to occur in large schools off the west coast of Australia (Ref. 9684). Fishing has been restricted because of unacceptably high by-catches of porpoises (Ref. 9987). All-tackle angling record, 35.9 kg (136 cm FL) from Montagne I., New South Wales (Ref. 11441). Also Ref. 168.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Randall, J.E., G.R. Allen and R.C. Steene, 1990
National Database:

Common names from other countries

Thon mignon, Atún tongol, Indian long-tailed tuna, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Scombriformes (Mackerels) > Scombridae (Mackerels, tunas, bonitos) > Scombrinae
Etymology: Thunnus: Greek, thynnos = tunna (Ref. 45335).
More on author: Bleeker.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; pelagic-neritic; oceanodromous (Ref. 51243); depth range 10 - ? m. Tropical; 47°N - 31°S, 34°E - 154°E (Ref. 54923)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Indo-West Pacific: Red Sea and East Africa to New Guinea, north to Japan, south to Australia. Reported in New Zealand (Ref. 89192).

Length at first maturity / Size / Weight / Age

Maturity: L_m 60.7 range ? - ? cm
Max length : 145 cm FL male/unsexed; (Ref. 40637); common length : 70.0 cm FL male/unsexed; (Ref. 168); max. published weight: 35.9 kg (Ref. 168); max. reported age: 19 years (Ref. 97108)

Short description Identification keys | Morphology | Morphometrics

Vertebrae: 39. A small species, deepest near the middle of the first dorsal fin base. The second dorsal fin is higher than the first dorsal fin; the pectoral fins are short to moderately long; swim bladder is absent or rudimentary. Lower sides and belly silvery white with colorless elongate oval spots arranged in horizontally oriented rows. The dorsal, pectoral and pelvic fins are blackish; the tip of the second dorsal and anal fins are washed with yellow; the anal fin is silvery; the dorsal and anal finlets are yellow with grayish margins; the caudal fin is blackish, with streaks of yellow green.

Predominantly neritic species avoiding very turbid waters and areas with reduced salinity such as estuaries. May form schools of varying size. Feeds on a variety of fishes, cephalopods, and crustaceans, particularly stomatopod larvae and prawns (Ref. 9684). Marketed mainly fresh and dried salted (Ref. 9684), but also smoked, canned and frozen (Ref. 9987).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator : Collette, Bruce B. | Collaborators

Collette, B.B. and C.E. Nauen, 1983. FAO Species Catalogue. Vol. 2. Scombrids of the world. An annotated and illustrated catalogue of tunas, mackerels, bonitos and related species known to date. Rome: FAO. FAO Fish. Synop. 125(2):137 p. (Ref. 168)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 01 July 2021

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

Fisheries: highly commercial; gamefish: yes

FAO(Fisheries: production, species profile; publication : search) | FIRMS (Stock assessments) | FishSource | Sea Around Us

More information

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Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

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Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Preferred temperature (Ref. 115969): 13 - 28.4, mean 26.5 (based on 1398 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01413 (0.00814 - 0.02450), b=3.00 (2.85 - 3.15), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 4.5 ±0.6 se; based on diet studies.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (K=0.32; assuming tm=2-4; tmax=18.7; Fec>1M).

Prior r = 0.79, 95% CL = 0.52 - 1.18, Based on 2 full stock assessments.

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (44 of 100).

Climate Vulnerability (Ref. 125649): High to very high vulnerability (75 of 100).

Price category (Ref. 80766): Very high.

Thunnus tonggol (Bleeker, 1851)