This document contains the report of the Fifth Meeting of the Aquaculture Subject Group and the Twenty-sixth meeting of the Fisheries Subject of CWP, held during the Intersessional Aquaculture and Fisheries Subject Group meeting of the Coordinating Working Party on Fishery Statistics (CWP-IS), which took place in Copenhagen, Denmark, from 19 to 22 June 2017. The work was organized between joint sessions to address issues of general interest, with the Subject Groups – Aquaculture (CWP-AS) and Fis heries (CWP-FS) –organized in concurrent sessions, to address matters related to the intersessional programme for each Subject Group. The meeting reviewed the progress made since the Twenty-fifth session of the CWP and agreed on actions for the second part of the intersessional period, prior to the upcoming Twenty-sixth session of the CWP to be held early in 2019. The main issues presented and discussed were the dissemination of the revised handbook on the CWP web page and the further enhancemen t of the socio-economic and GIS section of the handbook, the CWP ad hoc task group on “reference harmonization for capture fisheries and aquaculture statistics”, and the progress made by the Task Force in establishing the standard aquaculture questionnaire.