Abstract
Lake Nubia is the southern part, within the Sudanese borders, of the large man-made lake which emerged as a result of the construction of the Aswan High Dam in 1961. It is believed that the newly-developing lake conditions will affect fish populations and consequently offer a good fishery potential. The scope of the change and the prospect of a commercial fishery initiated fishery research from 1967. A richer western side is shown with prevailing lake conditions in the northern part and persistent riverine conditions in the southern part. A second study, during 1973/76, was on gill-net selectivities and fish populations, with the objectives of finding out how much stock exists, where to fish, when and how, and how much for sustainable fish yield. This study gave results concerning the fish species present, the most abundant ones and their seasonal variations; the best period for commercial catches and the most suitable nets. As a result of the studies conducted so far, the total fish production was estimated by comparison and extrapolation, as not less than 5000 tons annually.