1. Department of Parasitology Faculty of Veterinary Medicine Cairo University Giza Egypt
2. Department of Hydrobiology Veterinary Research Division National Research Centre Dokki, Giza Egypt
3. Department of Biochemistry Faculty of Veterinary Medicine Cairo University Giza Egypt
4. Central Laboratory of Aquaculture ResearchAgriculture Research Center Sharkia Egypt
5. Department of Aquatic Animal Medicine and Management Faculty of Veterinary Medicine Cairo University Giza Egypt