Aquatic Animal Welfare

Farmed Eel Welfare and Aquaculture Challenges

European and Japanese eels are farmed commercially but face significant welfare challenges from capture of wild juveniles, high stocking densities, and slaughter methods that may cause prolonged suffering.

Key Facts

Eel aquaculture depends almost entirely on wild-caught juvenile glass eels as no breeding in captivity occurs reliably
European eel is critically endangered partly due to glass eel capture for aquaculture
Eels are typically killed by asphyxiation in ice slurry or salt, causing prolonged suffering
High stocking densities cause aggression, oxygen depletion, and disease pressure
Electrical stunning before slaughter is available but rarely used commercially

Welfare Considerations

Eel farming has an unusual welfare profile: it depends on extracting wild juveniles of a critically endangered species, then raising them in high-density conditions before slaughter methods that cause prolonged suffering. This combination of conservation harm and welfare harm makes eel farming particularly difficult to defend from an ethical standpoint. Consumer reduction in eel consumption has measurable conservation and welfare benefits.

What You Can Do

Reduce or eliminate eel consumption given both the conservation and welfare concerns
Ask sushi and restaurant suppliers about their eel sourcing and welfare standards
Support research into captive eel breeding that would eliminate wild juvenile capture
Advocate for mandatory humane slaughter requirements for eels in aquaculture