The marine aquarium trade captures millions of wild reef fish annually. Their welfare during capture, transport, and captivity raises significant ethical questions.
The marine aquarium trade causes welfare harm at multiple stages. Cyanide fishing stuns fish by poisoning their nervous system — fish that survive immediate cyanide exposure often die within weeks from kidney and liver damage. Transport mortality rates reflect the extreme stress of capture, bagging, and multi-day transit for animals adapted to stable, vast reef environments. Survivors that reach home aquaria face the challenge of adapting to radically different conditions — limited space, artificial water chemistry, and absence of natural social and territorial structures. The captive-bred aquarium fish movement offers a genuine welfare improvement pathway — captive-bred fish are better adapted to aquarium conditions, show lower mortality, and do not deplete wild populations.