Aquaculture

Farmed Carp Welfare in Traditional Systems

Carp is the world's most farmed fish species, produced in extensive pond systems across Asia and Central Europe, with welfare challenges from crowding, oxygen depletion, and traditional harvesting methods.

Key Facts

Common carp is the world's most farmed fish species with over 4 million tonnes annually
Traditional pond systems in Central Europe have operated for centuries
Oxygen depletion in intensive ponds causes chronic stress and welfare compromise
Harvesting by hand-net and transport in overcrowded tanks causes acute welfare impacts
Carp welfare research is less developed than salmon and trout science

Welfare Considerations

Farmed carp welfare in traditional systems varies enormously. Extensive pond systems at appropriate densities may provide relatively good welfare. Intensive polyculture at high densities creates chronic oxygen and crowding stress. Harvest and live transport welfare deserves particular attention.

What You Can Do

Engage with the evidence on carp welfare when making seafood choices
Support research into carp welfare science and welfare indicators
Advocate for carp to be included in aquaculture welfare certification frameworks