The international symposium on “Inland Fisheries and aquaculture: advances in technology, stock assessment and citizen science in an era of climate change” was organized in conjunction with the thirty-first session of the European Inland Fisheries and Aquaculture Advisory Commission in Killarney, Ireland on 20–21 June 2022. The symposium was organized by Inland Fisheries Ireland and the Department of the Environment, Climate and Communications. The symposium was attended by 105 participants from 14 countries. The main documentation comprised six invited papers and 35 experience papers and 15 posters. The symposium had five major themes, which were: (i) Inland fish stock assessment, (ii) Developments in freshwater fish monitoring technologies with an emphasis on non-destructive methods, (iii) The problems and challenges of climate change and its impacts on inland aquatic resources and fisheries, (iv) Citizen science, and (v) Aquaculture - traditional freshwater systems vs recirculation systems. The symposium provided valuable networking opportunities for the participating scientists, especially young scientists could share their research findings. Many promising studies and innovative technologies and methodologies were presented. This Occasional Paper in conjunction with a special issue of Fisheries Management and Ecology represents the proceedings of the symposium. The thirty-first session of EIFAAC, held in Killarney from 22 to 24 June 2022, discussed and endorsed the conclusions and recommendations from the symposium.

The Thirty-first Session of the European Inland Fisheries and Aquaculture Advisory Commission (EIFAAC) was held in Killarney, Ireland, from 22 to 24 June 2022. The Session presented and discussed the results achieved by EIFAAC, its Management Committee and its Technical and Scientific Committee since the Thirtieth Session of EIFAAC in 2019. The Commission adopted four Resolutions and one Recommendation: 1) On EIFAAC Resolutions, Recommendations and Advisory Notes; 2) On the Code of Conduct for Recreational Fisheries and Invasive Alien Species; 3) On the protection of vulnerable and endangered fish species from unsustainable predation from cormorants; 4) On small-scale fisheries and aquaculture; and 5) On the Code of Practice for Recreational Fisheries. The Commission also reviewed the endorsed the recommendations from the well-attended EIFAAC International Symposium on “Inland Fisheries and Aquaculture - Advances in Technology, Stock Assessment and Citizen Science in an Era of Climate Change”, held in Killarney, Ireland, from 20 to 21 June 2022. Finally, the Commission reviewed and endorsed the updated EIFAAC Rules of Procedure and the work programme 2022–2024 and elected new officers. The Session and Symposium received generous support from the host organizations, Inland Fisheries Ireland and the Irish Department of Environment, Climate and Communications.

The objective of this Symposium is to identify pathways to strengthen the science and policy interplay in fisheries production, management and trade, based on solid sustainability principles for improved global outcomes on the ground. Ultimately, the debates and conclusions of the symposium will prepare the way for the development of a new vision for the way we perceive and use capture fisheries, outlining how the sector can respond to the complex and rapidly changing challenges facing society, and support the planning process of the UN Decade of Ocean Science for Sustainable Development (2021-2030).

The Symposium, held in concomitance with the Twenty-second Session of EIFAC, considered biological, environmental, social and economic impacts of fisheries management of lakes and rivers.