الفهرس 
Cover Page Title in EnglishOnly 14 pages are availabe for public view
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Abstract
The present study pias carried out to detect the role of fish in transmitting some parasitic diseases to man through the consumption of market fishes improperly cooked or ra fish infected with the larval staQes of these parasites in all the body and in the organs of fish which are muscles, eyes, liver, kidney, spleen and gills.
2113 freshiiater fish (Oreochromis spp. and Clari.as lazera) samples iiere collected and examined for the presence of parasitic larval stages. The obtained data revealed the following:
1. The overall mean of the infestation iiith encysted metacercariae as 70.37% in the examined fish.
2. The rates of infestation iiith encysted metacercariae i.iere 73.113 and 66% in the examined Oreochromis pp and Clarias lazera, respectively.
3. The highest prevalence of the encysted metacercariae ws uuriO im summer .n case ot Oreocl,romis spp. and in e.iinter in case of C. lazera.
14• The rate of infestation of encysted metacercariae in anterior third, middle third and posterior third of Oreochromis spp. iias found to be 83.81. 711.29 and 95.214%. respectively iihile 89.39. 87.88 and 90.9%. respectively in C. lazera.