The aim of the work is to develop theory and practice of sustainable fisheries.Used methods: abstract-logical approach, in particular, deduction and induction methods, analysis and synthesis, which made it possible to determine the essence of the concept of “sustainable fisheries”, highlight its features and system components, assess the development trends of world fisheries and aquaculture, develop a conceptual model of sustainable fisheries.The novelty of the study results lies in the identification of sustainable fisheries as an independent scientific economic category, clarification of its meaning, the creation of a new approach to the formation of the value chain of fish products in sustainable fisheries, and the development of a conceptual model of sustainable fisheries.Results of the study: the work characterizes sustainable fisheries in the context of its lack of alternative on the path to sustainable development; the functional classification of environmental goods and services is emphasized and the need to include them in the value chain of fishery products is justified; such system elements of the conceptual model of sustainable fisheries as its mission, goals, methodological basis, key factor, principles and tools are highlighted.The practical significance of the study is determined by its consistency with the general trend of industry development, which is based on an ecosystem approach to fisheries and aquaculture and a focus on achieving the goals of sustainable development of society.