Farmed Carp Welfare | Animal Welfare Hub

Carp are the most farmed fish species by volume globally, particularly in Asia. Their welfare needs, though poorly studied, are increasingly recognized as aquaculture scales.

Key Facts

Carp species account for approximately 40% of global aquaculture production by volume
Common carp, silver carp, bighead carp, and grass carp are the major farmed species
Carp are primarily farmed in China in polyculture pond systems at vast scale
They are highly adaptable fish tolerating a wide range of water conditions including low oxygen
Like tilapia, their hardiness has been exploited to enable intensive, often welfare-compromising production
Carp are among the least studied fish in terms of welfare science despite their enormous farmed numbers

Welfare Considerations

The sheer scale of carp farming — billions of animals annually — means that even modest welfare improvements could benefit enormous numbers of individual fish. Despite this, carp welfare remains poorly researched and weakly regulated. Their tolerance of poor water quality has enabled intensive stocking practices that cause crowding stress, fin damage, and disease. Harvest and slaughter practices vary widely; many carp are transported live to market and killed by the consumer. Live transport causes prolonged stress and oxygen depletion. The development of welfare standards for carp, the world's most farmed fish, represents one of the highest-leverage opportunities in aquaculture welfare science.

What You Can Do

Support aquaculture welfare research programs that include carp as a priority species
Advocate for Chinese and global aquaculture policy to develop minimum welfare standards for carp production
Choose carp products from certified sustainable operations where welfare standards are documented
Support organizations working to expand fish welfare science to under-studied carp species