Aquaculture

Sturgeon Welfare in Caviar Aquaculture

Sturgeon aquaculture for caviar production raises significant welfare concerns given the long rearing periods, invasive egg extraction procedures and handling requirements.

Key Facts

All 27 species of sturgeon are threatened with extinction from overfishing and habitat loss
Aquaculture now supplies the majority of global caviar production from farmed Siberian and Russian sturgeon
Female sturgeon take 7-12 years to reach reproductive maturity and caviar can only be extracted at that stage
Traditional caviar extraction required killing the fish; newer techniques allow non-lethal harvesting

Welfare Considerations

Welfare concerns include very long rearing periods (7-12 years) in tank or pond systems, invasive ultrasound examination and egg extraction procedures, handling stress for these large, stress-sensitive fish, and inadequate space in intensive production systems. Non-lethal milking techniques using oxytocin injection improve welfare by allowing females to survive and reproduce multiple times.

What You Can Do

Choose non-lethal process caviar where available, as this reflects better welfare standards
Support development of welfare standards specific to sturgeon aquaculture
Avoid wild-caught caviar which contributes to overfishing of critically threatened wild sturgeon populations
Advocate for welfare criteria in CITES-related caviar trade regulations