Socio-economic monitoring and evaluation in fisheries

•Managers, practitioners, and funders should monitor the socio-economic and human well-being aspects of fisheries.•Socio-economic monitoring and evaluation provides insights to guide decisions before, during and after an intervention.•Though many socio-economic monitoring and evaluation frameworks exist for fisheries, there is no one-size-fits-all approach.•This paper provides guidance on developing bespoke socio-economic monitoring and evaluation plans for fisheries.•The paper is a resource for governments, NGOs, funders and researchers working to improve human well-being in fisheries.