The ornamental fish trade captures tens of millions of wild coral reef fish annually using cyanide and other harmful methods, causing high mortality and welfare costs from capture through to retail sale.
The ornamental reef fish trade is a largely hidden welfare crisis combining individual animal suffering at massive scale with ecosystem destruction. Cyanide stunning causes liver and organ damage that may not kill fish immediately but results in delayed death weeks after purchase — a phenomenon that causes many aquarists to falsely attribute mortality to husbandry rather than capture stress. Wild-caught marine fish experience extreme handling stress, oxygen depletion and transport trauma across multi-step supply chains spanning days to weeks. At the retail level, many species are sold to aquarists without adequate information about their specialized care requirements, leading to further mortality. Supporting captive-bred alternatives, demanding supply chain transparency and advocating for cyanide fishing enforcement are all meaningful welfare interventions.