EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, 
provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright). Copyright holder: European Commission, European Environment Agency (EEA).
Copyright of the datasets:
1) "Stock assessment database (ICES)": please take a look at https://www.ices.dk/data/guidelines-and-policy/pages/ices-data-policy.aspx
2) "STECF 23-01 adhoc": https://ec.europa.eu/info/legal-notice_en