Anesthesia and recovery protocols for zebrafish require careful attention to dosing, monitoring, and recovery support to minimize welfare harm during procedures requiring immobilization.
Anesthesia of zebrafish without appropriate protocols can cause significant welfare harm through inadequate depth resulting in awareness during procedures, or excessive depth causing post-anesthetic mortality. The small size of zebrafish makes accurate dosing critical and individual variation means standard doses do not work identically in all fish. Recovery monitoring is essential as zebrafish removed from anesthetic solution require controlled conditions to recover safely. Institutional protocols for zebrafish anesthesia that specify dosing, monitoring, and recovery procedures are a fundamental refinement requirement. The 3Rs obligation to refine procedures applies fully to zebrafish anesthesia management.