No. Stock sustainability looks at whether a population can survive over time whereas fisheries welfare looks at what individual animals experience during capture, retrieval, handling, and slaughter.
A fishery can be within its catch limit and still expose animals to severe suffering, while a vessel may use technology and minimize suffering but exist in an unsustainable fishery. Many welfare improvements can, in fact, support sustainability. Improving gear selectivity, reducing bycatch and ghost gear, and improving post-release practices can benefit both individual animals and fish populations. Responsible fisheries management should take a more holistic approach and consider population health and animal welfare together.

