Milkfish Farming Welfare: Southeast Asia Most Important Farmed Fish

Milkfish are the most widely farmed fish in Southeast Asia and a staple protein source for millions. Understanding welfare conditions in milkfish aquaculture helps consumers and policymakers make better choices.

Key Facts

Milkfish are farmed in brackish water ponds across the Philippines, Indonesia, and Taiwan
The Philippines is the world largest milkfish producer, with annual output exceeding 300,000 tonnes
Milkfish farming uses both traditional extensive ponds and intensive cage systems
Stocking densities in intensive ponds cause aggression, oxygen depletion, and disease pressure
Milkfish are typically harvested by draining ponds or netting — both methods causing significant stress

Welfare Considerations

Milkfish welfare in intensive aquaculture suffers from the same pressures as other farmed fish: high stocking densities causing competition and aggression, oxygen depletion from overcrowding, disease susceptibility from chronic stress, and handling stress at harvest. Traditional extensive pond systems in which fish range more widely at lower densities offer better welfare outcomes. Harvest by pond draining causes prolonged crowding and air exposure before slaughter. As a major protein source for some of the worlds poorest communities, welfare improvements must be balanced against food security considerations.

What You Can Do

Support research into welfare-conscious milkfish farming that maintains food security outcomes
Choose milkfish from extensive rather than intensive pond systems where labelling allows
Back FAO and regional fisheries body guidelines on fish welfare in aquaculture
Engage with the equity dimension of fish welfare improvements in subsistence aquaculture contexts