Aquaculture Welfare

Aquaculture Fish Anaesthesia Welfare Standards

Anaesthesia for handling, grading and treatment procedures is important for fish welfare and increasingly incorporated in certification standards.

Key Facts

MS-222 (tricaine) and clove oil are commonly used anaesthetics for fish handling
Appropriate anaesthesia reduces cortisol stress responses during handling by 50-70%
Recovery time and water quality affect the welfare of fish after anaesthesia
Temperature affects anaesthetic efficacy and fish recovery time significantly
RSPCA Assured standards and some national regulations now require anaesthesia for certain procedures

Welfare Considerations

Fish handling without anaesthesia causes significant acute stress. Routine use of anaesthesia for invasive procedures, grading and health assessments reduces the welfare impact of necessary husbandry interventions in aquaculture.

What You Can Do

Support aquaculture certification standards requiring anaesthesia for invasive fish procedures
Advocate for mandatory anaesthesia requirements in national aquaculture welfare regulations
Ask fish producers about their anaesthesia protocols for routine husbandry procedures