Protein deficiency is one of the major global challenges facing the third world today. In Egypt, the continuous increase in human population requires more food production to meet the consequent increasing demands. With the increasing demands for animal protein, the poultry sources were expensive and insufficient. Fish are considered to compensate the continuous lack of such element due to its comparatively low price. Therefore, more attention is being now focused on the development of the natural fish resources in general and aquaculture in particular in order to compensate for both...