Coral Reef Fish Trade: Welfare in the Marine Aquarium Industry

The marine aquarium trade captures millions of wild reef fish annually using cyanide and other harmful methods, causing high mortality and welfare harms at every stage of the supply chain.

Key Facts

An estimated 20-30 million reef fish are traded globally for aquaria each year
Cyanide stunning, used in the Philippines and Indonesia, stuns fish but damages their liver
Post-capture mortality can reach 80% before fish reach the retail stage
Blue tang, mandarin dragonet, and clownfish are among the most traded species
Captive-bred marine fish now constitute a growing fraction of the trade

Welfare Considerations

Wild-caught reef fish experience serial trauma. Cyanide exposure causes sublethal liver and gill damage that kills fish weeks after capture. Handling, air exposure, and repeated transfer through the supply chain adds compounding stress. Many fish die in transit or soon after reaching retailers. Those that survive face aquarium conditions often poorly matched to their reef complexity needs. The trade effectively subsidizes mass mortality and welfare harm across vast wild fish populations.

What You Can Do

Only purchase captive-bred marine fish from reputable aquarium suppliers
Ask your aquarium shop whether wild-caught fish were sourced cyanide-free
Support Marine Aquarium Council certification for sustainable wild collection
Reject keeping species for which captive breeding programs do not yet exist
Advocate for mandatory cyanide testing of imported reef fish in your country