Tropical Marine Fish Welfare and the Aquarium Trade

The marine aquarium trade collects millions of fish from wild coral reefs annually using methods including cyanide stunning that cause severe welfare harm and reef damage.

Key Facts

Around 30 million marine fish are collected annually for the aquarium trade
Cyanide is used to stun fish for easy capture in an estimated 90% of collection in Southeast Asia
Cyanide causes delayed mortality — 40-60% of cyanide-caught fish die before reaching the retailer
Collection from the wild depletes reef populations of prized species including clownfish
Only around 1-5% of marine aquarium fish are captive-bred

Welfare Considerations

Cyanide-stunned fish experience chemical injury to their gills, liver and intestines — they appear normal but die within weeks from organ failure. Survival in transit is followed by mortality from chronic cyanide damage. Even fish caught without cyanide experience severe stress from capture, bagging and multi-stage transport. Marine aquarium fish mortality in the supply chain is estimated at 80% before reaching a home aquarium. This scale of suffering demands urgent trade reform.

What You Can Do

Purchase only captive-bred marine fish — clownfish, dottybacks and some cardinalfish are reliably available
Avoid purchasing reef fish species known to require cyanide collection
Support the Marine Aquarium Council certification scheme for ethical collection
Advocate for mandatory cyanide testing as a condition of marine aquarium fish import licences