This paper summarizes the results of the comparative report, made in the framework of the MASMANAP Concerted Action, on new aquaculture species and products in the eight partner countries. After the comparison of the current tendencies on different European seafood markets, the major differences between Northern Countries and Southern countries appear clearly. The comparative report about seafood consumption shows that the demand for food products has considerably changed over the past ten years. The need for proteins has declined because of better eating habits, to lower energy needs through changes in production processes and to the decline of the population growth.