The main purpose of this workshop was to take the first steps in considering whether the general approaches which have been used in the past by the Working Group, primarily to address the safety/ risk assessment of transgenic plants, could be applicable to similar work on the safety/ risk assessment of transgenic fish.The objective of the workshop was to identify and review the kinds of (and availability of) baseline information of (non-transgenic) from traditional fish farming or breeding, and to determine what information might be relevant to risk/ safety assessment; and what information might be needed for the development of a biology document. The overall approach used by the Workshop was similar to that done to first identify and circumscribe the issues about crop species that would inform a risk/safety assessment of the same species after it had been transformed.