Legal protections for fish welfare lag far behind those for mammals and birds. Examining global legislative trends reveals both progress and significant remaining gaps in fish protection.
The welfare of fish in legal systems reflects the historical underestimation of their capacity to suffer. As scientific evidence has accumulated demonstrating that fish have nociceptors, stress responses, and learning capabilities consistent with pain experience, legislative pressure has grown. However, translating science into law faces commercial resistance given the enormous scale of global fishing. Billions of fish die annually in commercial fisheries with no welfare requirements whatsoever. Aquaculture is slightly better regulated in some jurisdictions but still falls far short of standards applied to terrestrial farmed animals. Legislative reform requires international coordination given the transboundary nature of fishing.