Cultivated mullet fish were compared with the wild mullet fish from four locations during summer and winter 2005122006. This work was evaluated via chemical analysis of feed, water, sediments and fish besides their contents of three heavy metals (Cd, Fe a Pb). From the results obtained. it could be concluded that there is a pollution with heavy metals (particularly with iron and lead) in all fish feeds, rearing water and sediments of the tested locations (mainly in summer season). Also, there is no difference between fish of natural resources and those of aquaculture concerning metals pollution. So, it is a must to take considerations from the responsible authorities for treating all kinds of waste waters before reaching water bodies to protect aquatic life and consumers.