Farmed Eel Welfare: An Overlooked Crisis

The welfare challenges of farmed European and Japanese eel production, including capture of wild juveniles and intensive farming conditions.

Key Facts

European eel (Anguilla anguilla) is Critically Endangered, yet wild glass eels are still legally captured and used to stock aquaculture facilities
Eel farming cannot yet use fully closed-cycle captive breeding, making it dependent on wild-caught juveniles
Eels are highly territorial and cannibalistic, requiring intensive management at high stocking densities in land-based recirculating systems
Japanese eel (Anguilla japonica) faces similar challenges in East Asian aquaculture, where it is a major cultural food
Eels can breathe air and are extraordinarily stress-tolerant, which historically led to assumptions they do not suffer from poor conditions
Research indicates eels do respond physiologically to noxious stimuli and likely experience pain similarly to other fish

Welfare Considerations

Farmed eel welfare is complicated by the species unique biology and the conservation crisis surrounding wild populations. The reliance on wild glass eel capture means that eel farming contributes directly to the decline of Critically Endangered wild populations — a conservation welfare issue compounded by individual animal welfare concerns in farming. High-density intensive conditions with limited environmental complexity cause chronic stress. Slaughter practices for eels are often particularly poor, with live skinning and gutting still practiced in some markets. The combination of conservation status, welfare in farming, and poor slaughter practices makes eel one of the most ethically problematic seafood choices available. Regulatory action on glass eel capture quotas and improved slaughter standards are both urgently needed.

What You Can Do

Avoid purchasing European eel products due to the species Critically Endangered conservation status
If purchasing eel products, ask about the species and source — some farmed alternatives have lower conservation impacts
Support sustainable fisheries legislation that restricts glass eel capture to support wild population recovery
Advocate for development of fully closed-cycle eel aquaculture that eliminates dependence on wild juvenile capture
Support organizations working on European eel conservation and habitat restoration in freshwater systems