The central and common thrust of the various MASMANAP project tasks has been to identify and evaluate the data which are available to aquaculture producers so that they might be able to make decisions about developing new products. The paper presents and discusses the existing and desirable data for market research on aquatic food products. The need for qualitative data as a complement to quantitative data is shown, to allow an accurate understanding of the customer/market interface, and an analysis of the needs of individual users groups. The advance of information and communication technology (ICT) enables more detailed investigation and survey. The difficulty of access to market research data for individual small producers is pointed out, and the interest of alliances between organisations along the supply chain for a better information about highly dynamic markets.