A review on the most important parasite pathogens identified in ornamental fish

The proliferation and cultivation of ornamental fish with an economic and decorative approach is one of the important activities of the aquaculture industry, which has grown over the recent decades and occupies a significant part of international trade. In addition to this growth and development, one of the most important challenges facing the industry is the emergence and occurrence of various diseases, including the involvement of protozoan parasites, which cause many problems in these fish, including growth retardation, delayed sexual maturation or fish infertility, casualties, high cost of treatment and control of parasites. Also, parasites often provide the basis for other diseases, such as Bacterial, Viral and Fungal infections, which cause severe mortality and morbidity. Therefore, this study reviewed the types of pathogens of ornamental fish and presented solutions for their control and treatment.