Farmed Fish Slaughter: Welfare Standards and the Road Ahead

A comprehensive review of farmed fish slaughter welfare standards globally, from leading examples to the most widespread inadequate practices.

Key Facts

Norway requires electrical or percussion stunning before salmon slaughter
New Zealand requires humane killing for farmed fish
Most global aquaculture production has no mandatory pre-slaughter stunning requirements
Percussive stunning with a sharp blow to the head is effective for small fish where electrical stunning is impractical
The development of automated stunning systems is making humane slaughter commercially viable at scale

Welfare Considerations

Fish slaughter welfare represents the most acute welfare intervention in aquaculture and one of the most significant welfare opportunities. At the point of death, all the welfare investment of farming can be negated by inhumane killing methods. Conventional methods including live suffocation in ice and CO2 stunning cause prolonged distress in animals with demonstrated pain responses. Effective humane alternatives - electrical stunning, percussive stunning, and automated systems - are commercially available and increasingly required by regulators and certification schemes. The global aquaculture industry has an opportunity and obligation to adopt these standards universally.

What You Can Do

Choose fish from certified sources requiring pre-slaughter stunning
Advocate for mandatory stunning requirements in your national aquaculture regulations
Support certification schemes with explicit humane slaughter requirements
Ask seafood suppliers directly about their fish slaughter methods
Support Aquatic Life Institute and similar organizations campaigning for fish slaughter welfare