Arctic Char Aquaculture Welfare | Animal Welfare Hub

Arctic char is a premium cold-water salmonid with specific welfare requirements for low water temperatures and appropriate social conditions.

Key Facts

Arctic char naturally inhabit deep, cold, oxygen-rich lakes in alpine and arctic regions
They require water temperatures below 15 degrees C for optimal welfare and growth
Thermal stress from water temperatures above their tolerance causes significant welfare harm
Arctic char show complex social behavior and require appropriate group sizes and densities

Welfare Considerations

Arctic char welfare in aquaculture depends critically on maintaining the cold, oxygen-rich water conditions that this species evolved to inhabit. Thermal stress from water temperatures that exceed their physiological optimum causes metabolic dysfunction, impairs immune function, and reduces welfare measurably. As water temperatures rise under climate change, maintaining appropriate conditions for arctic char in some production regions is becoming increasingly challenging and may require greater energy investment in cooling. Social welfare considerations for arctic char include avoidance of very low or very high density production that either permits excessive aggressive interactions or restricts behavioral expression through crowding.

What You Can Do

Choose arctic char from operations demonstrating appropriate water temperature management
Support research into welfare indicators for arctic char under changing climate conditions
Advocate for welfare standards that address thermal requirements for cold-water aquaculture species
Engage with aquaculture producers on long-term planning for welfare-positive production under climate change