Welfare of Farmed Eel — A Complex Aquaculture Challenge

European and Japanese eel farming faces unique challenges because eel cannot be bred in captivity — all farmed eels begin as wild-caught glass eels.

Key Facts

European eel (Anguilla anguilla) is critically endangered — wild populations have declined over 90% since the 1980s
Glass eel (juvenile eel) collection for aquaculture is a major pressure on wild European eel populations
Eel cannot be induced to breed in captivity — every farmed eel began as a wild-caught juvenile
Japanese eel (Anguilla japonica) faces similar challenges — Japanese unagi consumption drives enormous pressure on wild populations
Eel are slaughtered by methods that cause prolonged conscious death in some facilities — spiking, decapitation, or live skinning
High stocking densities and poor water quality in eel farms cause skin lesions, fin damage, and disease
Some consumers are shifting to alternative species given eel conservation and welfare concerns

Welfare Considerations

Eel welfare involves both individual animal welfare and a species conservation crisis that are deeply linked. The inability to breed eels in captivity means every farmed eel was taken from wild populations already at critically low levels. Welfare during captive growth suffers from high density and poor water quality in many facilities. Slaughter welfare is particularly poor — eels have a strong writhing response that makes conventional stunning difficult, and some traditional preparation methods involve prolonged conscious suffering. Consumer reduction in eel consumption, particularly of endangered European and Japanese species, is both a welfare and conservation action.

What You Can Do

Reduce or eliminate eel consumption given both welfare and conservation concerns
Choose sustainably certified eel products only where consumption continues
Avoid European eel entirely given its critically endangered status
Support campaigns against live eel preparation methods that cause prolonged suffering
Advocate for aquaculture licensing restrictions that limit glass eel collection from wild populations