Aquaculture

Pikeperch Welfare in European Recirculating Aquaculture Systems

Pikeperch is increasingly farmed in European RAS systems and its welfare requirements, including space, water quality and social needs, are being actively researched.

Key Facts

Pikeperch (zander) aquaculture is growing in Finland, the Netherlands, Denmark and Germany
RAS systems enable year-round production independent of climate but require careful water quality management
Pikeperch are sensitive to high densities and can show cannibalism and fin erosion in crowded conditions
They prefer low light conditions and need hiding structures in their native riverine habitat

Welfare Considerations

Welfare concerns in intensive pikeperch RAS include stress from overcrowding, fin erosion from aggressive interactions, sensory deprivation in bare tank environments, and handling stress during routine management. Water quality requirements including low ammonia, adequate oxygen and appropriate temperature are critical. Providing hiding structures and low light conditions improves welfare in production settings.

What You Can Do

Support research into species-appropriate welfare standards for pikeperch in RAS
Advocate for welfare criteria in European RAS aquaculture certification
Choose pikeperch from certified producers demonstrating responsible welfare management
Support development of welfare assessment tools specific to pikeperch production systems