Marine Animals

Shrimp Farming Welfare: Eyestalk Ablation and Crowding

Farmed shrimp endure eyestalk ablation to accelerate breeding and extreme crowding in ponds with almost no welfare standards.

Key Facts

Eyestalk ablation removes the eye of breeding female shrimp to induce spawning
The procedure is performed by cutting, burning, or crushing the eyestalk without anesthesia
Global shrimp aquaculture produces over 5 million tonnes annually
Stocking densities in intensive shrimp ponds can reach 100+ individuals per square meter
The Shrimp Welfare Project is developing the first welfare standards for farmed shrimp

Welfare Considerations

Eyestalk ablation removes a sense organ and hormonal regulator through a painful procedure performed on every breeding female shrimp in intensive aquaculture. Hyperdense crowding prevents normal social spacing behavior. Water quality deteriorates rapidly at high densities, stressing shrimp physiologically. The scale of shrimp farming and the uncertainty about shrimp sentience means that any probability of suffering affects hundreds of billions of individuals annually.

What You Can Do

Support the Shrimp Welfare Project standards development work
Choose shrimp products from farms certified to prohibit eyestalk ablation
Reduce shrimp consumption given documented welfare concerns
Advocate for eyestalk ablation prohibition in aquaculture welfare standards
Donate to invertebrate welfare research programs studying shrimp sentience