Aquatic Animal Welfare

Shrimp Water Quality and Welfare

Water quality parameters in shrimp aquaculture directly affect shrimp welfare, and precision management of dissolved oxygen, pH, and ammonia levels reduces suffering and disease susceptibility.

Key Facts

Dissolved oxygen below 3 mg/L causes acute stress and mortality in farmed shrimp
Ammonia accumulation from shrimp waste is toxic - total ammonia nitrogen above 0.5 mg/L impairs welfare
pH fluctuations outside the 7.5-8.5 optimal range impair molting, growth, and immunity
Probiotics added to shrimp ponds improve water quality by processing waste and competing with pathogens
Continuous automated water quality monitoring enables rapid response to deteriorating conditions

Welfare Considerations

Water quality is the most fundamental welfare determinant for farmed shrimp. Poor oxygen levels, toxic ammonia accumulation, and pH extremes cause physiological stress that directly impairs welfare - whether or not shrimp subjective experience is confirmed. The welfare and economic arguments align: shrimp in poor water quality are stressed, disease-susceptible, and grow poorly. Precision water quality management serves both welfare and production interests.

What You Can Do

Support shrimp aquaculture certified to standards that include water quality monitoring requirements
Ask retailers about water quality management standards in their shrimp supply chains
Support research into low-cost water quality monitoring technology for smallholder shrimp farmers
Advocate for water quality standards to be included in shrimp welfare certification schemes
Choose certified sustainable shrimp over non-certified alternatives where available