Sustainable fisheries refer to fishing practices that maintain fish populations and their habitats while ensuring that fishing can continue for future generations. This approach balances the ecological health of marine ecosystems with the economic needs of communities that rely on fishing. Key principles of sustainable fisheries include regulating catch limits, protecting habitats, and using methods that minimize bycatch, which is the unintentional capture of non-target species. Organizations like the Marine Stewardship Council promote sustainable practices by certifying fisheries that meet specific environmental standards.