Endangered species - Southern Bluefin Tuna
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Southern Bluefin Tuna - Thunnus maccoyii
Distribution
Southern Bluefin Tuna are highly migratory pelagic fish. In Australian waters they range from northern NSW around southern Australia to northwestern Australia. They tend to form large surface schools in offshore waters off southern Australia at certain times of the year. Overfishing has drastically reduced its numbers.
Size
Southern Bluefin Tuna can reach a maximum length of 2.35 metres and can attain a weight of around 200kg, but rarely exceed 100kg in Australian waters.
Characteristics
Southern Bluefin Tuna are a member of the family Scombridae and are recognised by their relatively short pectoral fins and robust body. Their upper bodies are blackish-blue and the underside is a silver colour. Juvenile and adult Southern Bluefin Tuna are opportunistic feeders that feed mainly on squid, crustaceans, fish and planktonic animals.
Species similar in appearance
Longtail Tuna (Thunnus tonggol) are similar in appearance to Southern Bluefin Tuna, but can be distinguished by their shorter pectoral fins and dark caudal keels.
Fisheries Scientific Committee determination
- Fisheries Scientific Committee determination (PDF 37.44 KB)
More information
- Priorities Action Statement - Actions for Southern Bluefin Tuna
- New Recreational Fishing Rules for Southern Bluefin Tuna
- New Fishing Rules for Southern Bluefin Tuna in NSW - Frequently Asked Questions
- Primefact - Southern Bluefin Tuna - Thunnus maccoyii
- Southern Bluefin Tuna - changes to recreational fishing rules