Document Type : Review articles
Authors
1
Department of Pathology, Faculty of Veterinary Medicine, Delta University for science and technology, Gamasa, 35712, Egypt.
2
Department of Parasitology, Faculty of Veterinary Medicine, Menoufia University, Shebeen Elkom 32511, Egypt.
3
Department of Pathology, Faculty of Veterinary Medicine, Menoufia University, Shebeen Elkom 32511, Egypt.
Abstract
Fish industry has been considered one of the most significant food manufacturing sectors in the world. Rapid growth, low fat, high quality protein and affordable price made fish aquaculture a suitable way for meeting human nutritional demands worldwide. However rapidly growing aquarium and fish aquaculture may result in unsuitable ecological conditions that may impact fish quality, marketability and causing diseases. Fish are susceptible to a wide range of parasitic diseases, which in turn can lead to significant financial losses. Blindness, emaciation, unusual behavior, gill deformity and impotence are common signs of parasitism. Fish can be infected by external and internal parasites, which can result in severe mortalities. External parasites include Trichodina sp., Ichthyophthirius multifiliis, Chilodonella sp., Isopoda and Monogeneans, while internal parasites include Anisakis simplex, digenic trematodes (Encysted metacercaria) and cestodes. Some internal parasites are of public health importance, causing severe human illness. Vomiting, diarrhea, fever and severe abdominal pain are common signs of consumption of infected fish. Health regulations must be managed in order to minimize the detrimental effects of diseases on fish and populations.
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