Streptococcosis in some fishes: Characterization of whole cell protein of the prevalent streptococcus spp. Some Studies on the effect of florfenicol in Oreochromis niloticus experimentally infected with Entertococcus faecalis Effect of vitamin C dietary supplementationin reducing the alterations induced byfenitrothion in Oreochromis niloticus STUDIES ON MYXOSPORIDIOSIS IN SOME FRESH WATER FISHES Efficacy of formalin, iodine and sodium chloride inimprovement of egg hatching rate and fry survivalprior to the onset of exogenous feeding in yellow perch Studies on Some Parasitic Diseases in Oreochromis niloticus Fish Hatchery with Emphasis to Life Stages Enhancement of Antioxidant Activity, Non-specific Immunity and Growth Performance of Nile Tilapia, Oreochromis Niloticus by Dietary Fructooligosaccharide Potential effects of dietary nutmeg aqueous extract and its powder on immune response and antibacterial activity of Nile tilapia Oreochromis niloticus. Are Pre Spawning Stressors Affect Reproductive Performance of African Catfish Clarias gariepinus Effect of dietary fructooligosaccharide supplementation on feed utilization and growth performance of Nile tilapia (Oreochromis niloticus) fingerlings Diagnosis of some internal parasitic diseases in some freshwater Fishes Effect of Dietary Fructooligosaccharide on Bacterial Infection , Oxidative Stress and Histopathological Alterations in Nile Tilapia(Oreochromis niloticus).