Arctic Char Welfare in Cold-Water Aquaculture Systems

Arctic char farming in Iceland, Scandinavia, and North America raises specific welfare challenges related to cold water requirements and handling sensitivity.

Key Facts

Arctic char require water temperatures below 18 degrees Celsius for optimal welfare
They are farmed in land-based RAS systems and flow-through net pen systems
Char are highly sensitive to crowding and handling stress compared to other salmonids
Iceland is a major producer using naturally cold geothermal water
Welfare research for arctic char is less developed than for Atlantic salmon

Welfare Considerations

Arctic char welfare is closely tied to water temperature management. Above 18 degrees Celsius, thermal stress impairs immune function and increases susceptibility to disease. They show pronounced crowding avoidance, making high-density culture inherently more stressful for this species than for Atlantic salmon. Handling during vaccination and grading must be minimised through careful design of net pen access systems. Welfare research specific to arctic char remains an important gap in the literature.

What You Can Do

Choose arctic char from RAS systems with verified temperature management and welfare protocols
Support research into arctic char-specific welfare indicators and optimal stocking densities
Ask retailers about sourcing standards for arctic char regarding water temperature management
Encourage certification schemes to develop species-specific standards for arctic char