Greater Amberjack Welfare in Mediterranean Aquaculture

Greater amberjack are a premium aquaculture species in Mediterranean Europe, with welfare challenges from their highly active pelagic lifestyle in cage production systems.

Key Facts

Greater amberjack (Seriola dumerili) are increasingly farmed in sea cages in Spain, Italy and Greece as a high-value alternative to sea bass
They are extremely fast-swimming, pelagic predators requiring large, high-current cage environments for adequate welfare
Amberjack are highly sensitive to handling — crowding events cause severe stress, panic injuries and myopathy
Sea lice infestation is an emerging problem in amberjack cage culture, requiring treatment approaches adapted from Atlantic salmon management

Welfare Considerations

Amberjack welfare in cage culture faces the fundamental challenge of confining fast-swimming pelagic predators. Their high metabolic rate and continuous swimming requirement mean that cage volume, current flow and stocking density are all critical welfare parameters. Crowding during health treatments or harvest causes panic swimming, collision injuries and post-crowding myopathy that significantly impairs muscle quality and welfare. Offshore cage siting in high-current environments substantially improves welfare outcomes compared to nearshore, sheltered sites.

What You Can Do

Site amberjack cages in high-current offshore locations that allow natural swimming behaviour
Minimise crowding events and use low-stress handling protocols with maximum efficiency to reduce crowding duration
Implement percussion or electrical stunning before harvest to prevent panic-induced welfare and muscle quality problems
Monitor for sea lice and develop treatment protocols adapted to amberjack physiology and stress tolerance