Aquaculture

Welfare of Fish During Transport

Live fish transport is a high-risk welfare event requiring careful management of oxygen, temperature, and density.

Key Facts

Fish transported at high density and low oxygen show post-transport mortality and welfare compromise
Temperature shock during transport causes immune suppression lasting days
Anesthetics can reduce transport stress in some species
Post-transport recovery periods before further handling reduce cumulative stress effects

Welfare Considerations

Fish in transport experience multiple simultaneous stressors including crowding, reduced oxygen, temperature variation, and motion. Ammonia accumulation from waste rapidly becomes toxic at high fish densities. Transport stress causes cortisol elevation that persists for 24-48 hours, compromising immune function and welfare. Careful oxygen management, appropriate density, and post-transport recovery periods substantially reduce welfare harm.

What You Can Do

Support certified operations with documented fish transport welfare protocols
Advocate for transport welfare requirements in aquaculture certification standards
Back research into transport conditions minimizing fish stress
Choose fish from operations that minimize transport stress in their supply chain