The main topic of my research interest is the study of the effects of pollution (Air, chemical and water) and it's toxicity on fish, my master thesis was entitled “Effect of ultraviolet radiation on the morphological, histological and biochemical characteristics of the early developmental stages of African catfish, Clarias gariepinus (Burchell, 1822).” And my Ph.D. Thesis entitled "Effects of 4-nonylphenol on some organs, hormones, and the embryonic development of the African catfish Clarias gariepinus (Burchell; 1822).