What it covers
Port Lincoln, SA is the world capital of Southern Bluefin Tuna ranching — wild juveniles are towed in cages from the Bight to feeding pens, then harvested for the global sashimi market.
Key facts
- Wild juveniles caught in the Great Australian Bight, mostly in summer
- Towed in slow-moving cages back to Port Lincoln
- Fed sardines and pilchards over 3–6 months for fat and flavour
- Predominantly exported to Japan's sashimi market
- Stock now classified as recovering — once depleted, now under conservative management
- Industry vital to the Port Lincoln regional economy
By the numbers
$200M+Annual industry value
1994CCSBT international quota established
3–6moTime tuna spend in feeding pens
100%Catch documented under CCSBT scheme
Workforce & economy
Workforce
Direct: ~700 direct jobs in Port Lincoln tuna ranching
Indirect: ~2,000 indirect (sardine bait fishery, cage manufacture, freight, vets)
Regions: Port Lincoln, SA (only ranching site)Great Australian Bight (capture grounds)
Economic impact
GVP: ~$200M annual industry value
Exports: Almost 100% exported, primarily Japan (sashimi market)
Australia's CCSBT quota is ~6,000t/year (subject to triennial reviews).
Key producers & operators
Stehr GroupPort Lincoln, SA
Southern bluefin tuna ranching pioneer
Australian Tuna Boat Owners Association (ATBOA)Port Lincoln, SA
Industry body for SBT operators.
Tony's Tuna InternationalPort Lincoln, SA
SBT ranching and processing
Sarin Marine FarmPort Lincoln, SA
SBT ranching
Industry bodies
Regulation
Frameworks & schemes
- Catch Documentation Scheme (CDS) — Every fish tracked from cage to plate.
- Statutory Fishing Rights (SFRs) — Tradeable individual quotas.
- Vessel Monitoring System (VMS) — 100% coverage on capture vessels.
Certifications
- CCSBT CDS — Every harvested fish has electronic tag and origin record — gold-standard traceability.
History
- 1952Commercial SBT pole-and-line fishery begins in SA.
- 1982Catches peak globally; stock crashes through the 1980s.
- 1994CCSBT established with binding national quotas.
- 1996First commercial tuna ranching trial in Port Lincoln succeeds.
- 2009Stock declared severely depleted; quotas slashed.
- 2014Stock declared 'recovering' under CCSBT rebuilding strategy.
- 2024Quota raised in line with rebuilt stock; ~6,000t for Australia.
Key reports
Challenges
Climate-driven distribution shiftsSBT spawning grounds and migration paths sensitive to ocean warming.
Feed sustainabilityPen-fed sardines/pilchards put pressure on bait fisheries; FCR research ongoing.
Closed-cycle breedingHatchery-reared SBT (vs wild juvenile capture) remains a long-term R&D goal.
Market concentrationAlmost entirely dependent on Japanese sashimi market — exchange-rate and demand risk.
Sources