1. Department of Animal Hygiene, Zoonoses and Behavior, Faculty of Veterinary Medicine Suez Canal University Ismailia Egypt
2. Fish Farming and Technology Institute Suez Canal University Ismailia Egypt
3. Department of Fish Diseases and Management Faculty of Veterinary Medicine Suez Canal University Ismailia Egypt
4. Department of Pathology Faculty of Veterinary Medicine Suez Canal University Ismailia Egypt