Welfare of Fish in Ornamental Pond Trade

Ornamental fish for garden ponds including koi and goldfish varieties are traded globally with significant welfare concerns in transport and retail.

Key Facts

Koi fish can be worth thousands of dollars and are transported internationally
Transport bags contain minimal water with oxygen supplementation for short journeys
Long-distance shipping causes ammonia accumulation and disease stress
Retail stores often hold fish in densely stocked display tanks causing disease outbreaks
Imported koi have introduced diseases devastating wild and captive fish populations worldwide

Welfare Considerations

Ornamental pond fish experience welfare harms throughout the trade chain. Long-distance transport causes temperature shock, ammonia toxicity, and disease. Retail holding conditions commonly spread velvet disease, koi herpesvirus, and parasites. Buyers receive stressed, potentially infected fish and introduce disease to established ponds. The welfare and ecological harm of fish disease introduction is rarely considered in the ornamental trade. Koi herpesvirus introduced through the trade has devastated carp populations worldwide.

What You Can Do

Source koi from reputable domestic breeders with health certification
Quarantine all new fish before introducing them to established ponds
Never release pond fish into natural waterways
Support disease monitoring and biosecurity standards in the ornamental fish trade