A sustainable proposal for the fishing chain: Innovative, sustainable, eco-friendly, and social-economic viable

The predominant linear model in fisheries supply chains results in substantial resource inefficiencies, environmental degradation, and socioeconomic challenges, particularly in small-scale fishing communities. Despite the increasing recognition of circular economy principles as a sustainable alternative, their application in artisanal fisheries remains underexplored. This study addresses this critical gap by proposing an innovative circular economy framework for the Z-3 Fishing Community in Pelotas, Brazil. Based on over a decade of interdisciplinary research and community engagement, this model integrates the valorization of fish by-products into high-value applications, such as biodiesel, fertilizers, and animal feed. Utilizing a qualitative case study approach that includes participatory observation, unstructured interviews, and bibliographic research, the findings demonstrate that circular strategies can significantly reduce fish waste, enhance resource efficiency, and foster local economic resilience. This research provides empirical evidence supporting the transition from a linear to a circular system, offering a replicable and scalable solution to mitigate environmental impacts while improving the livelihoods of small-scale fishers.