Southern Bluefin Tuna

southern bluefin tuna
© Tasmanian Government. Image Peter Gouldthorpe
Season: Open all year

bag limit2


possession limit2


boat limit4

The limits apply to southern bluefin, yellowfin, bigeye tuna combined. The boat limit allows only 2 tuna over 1.5 metres.

Guide to symbols

bagBag Limit
housePossession Limit
boatBoat Limit

Minimum size


Most scalefish are measured from the nose to the end of the tail. Get your scalefish measuring ruler or sticker at any Service Tasmania outlet.

Other names

Southern tuna, bluefin tuna, SBT

Scientific name

Thunnys maccoyii

Grows to

Up to

2m 220kg

Identifying features

​The largest of the Tasmanian tunas, southern bluefin have a moderately long and muscular body with small scales covering skin. They are bluish black in colour along the back and silvery white below. Keels are present near the tail and are coloured yellow in juveniles and black in adults. Looks similar to bigeye tuna (Thunnus obesus) but fishers experienced in catching SBT will be able to identify distinguish bigeye by the larger shape of the eye and the chubby form of the fish.


A fast swimming tuna found in the open ocean, southern bluefin are highly migratory and may be found around Tasmania when the water temperature starts to cool, generally from March to June and spend winter in offshore waters.  Can be found in close to sea cliffs but generally found in waters from 40 metres depth.

Fishing information

Southern bluefin tuna are actively targeted by game fishers off Tasmania’s east and south coasts during autumn and into winter.  Usually caught by trolling large lures.  In recent years, the stocks of SBT have declined to the point where catch limits have been placed upon the fishery in an attempt to allow the stocks to recover.


Tuna need to be correctly handled after capture to retain the best eating quality.  They should be killed using a brain spike, bled, then cleaned and chilled shortly after capture. Tuna has a high oil content, distinctive flavour and firm, dark flesh which lightens when cooked.  Cooking methods: bake, barbecue, foil bake, marinate, sashimi.  Cooked tuna steaks are often preferred by Tasmanian fishers.


Fishwatch Report illegal fishing

0427 655 557

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Contact us

Recreational Fishing

Level 3, 134 Macquarie St

Hobart TAS 7000

Phone: (03) 6165 3233, 1300 720 647


Commercial Fisheries

Level 3, 134 Macquarie St

GPO Box 44

Phone: (03) 6165 3000, 1300 368 550


Commercial Fisheries Licensing

Level 1, 134 Macquarie St

GPO Box 44

Phone: (03) 6165 3000, 1300 368 550