Marine Animal Welfare

Tuna Ranching Mediterranean Welfare

Welfare challenges in Mediterranean bluefin tuna ranching operations including crowding, transport, and slaughter practice review.

Key Facts

Mediterranean bluefin tuna ranching involves capturing wild fish and fattening in sea cages
Ranched tuna experience chronic stress from high density confinement
Crowding during harvest is a major welfare concern given tuna's active, migratory nature
Electric stunning before slaughter is possible but not universally adopted
ICCAT manages bluefin tuna quotas but welfare is not within its mandate

Welfare Considerations

Bluefin tuna are large, migratory fish that travel thousands of kilometres in the wild. Ranching operations confine these animals in sea cages for months before slaughter, creating conditions incompatible with their natural behavioural needs. The welfare implications of capture, transport, crowding, and slaughter deserve much greater attention given the scale of the industry.

What You Can Do

Avoid farmed or ranched bluefin tuna unless welfare certification is demonstrated
Support inclusion of welfare criteria in ICCAT management discussions
Advocate for mandatory pre-slaughter stunning in tuna ranching operations