Guinea-Bissau is creating a sustainable fishing sector to meet international fisheries agreements and to tackle global changes in marine ecosystems, which is vital to improve the GB economy and the quality of life of its people. Therefore we aim to : i) Build scientific and technical capacity on the application of DNA-based approaches to fisheries resources' monitoring and management in local institutions, through training programs, knowledge transfer, laboratory internships and implementation workshops; ii) Implement a DNA barcode reference library for GB's fisheries resources together with tissue and DNA vouchers; iii) Devise a tailored protocol of DNA metabarcoding in zooplankton surveys, providing accurate identifications of fish eggs and larvae, thereby providing key information on spawning grounds and seasons and estimated recruitment.