الفهرس 
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Abstract
This study was carried out to detect the parasites affecting some marine fishes. Fish species
collected were 100 Dicentrarchus labrax and 100 Scomberomorus commerson from Suez
Canal water at Ismailia provinces. There was no pathognomonic signs in infested fishes
samples except marbling of gills in fishes with gill monogenean infestations. Other signs and
P.M. lesions were bulging of operculi, haemorrhages, abrasions on skin, abdominal distension
and emaciation, pale liver, congesion and enlargement of stomach and intestine with enteritis
in some cases. The highest infestation rate was in S. commerson (88%) followed by D. labrax
(29%). The isolated parasites were monogenetic trematodes (Diplectanum sp and Microcotyle
sp.), Digenetic trematodes (Prosorhynchus sp), crustacean parasite (Renocila sp.), nematodes
(Hysterothylacium aduncum and Hysterothylacium sp), acanthocephala (Rhadinorhynchus sp)
and cestode larvae (Tetraphyllidean larvae). Seasonal prevalence, relation between fish body
weight and length and infestation, statistical analysis and histopathological picture were also
recorded
Key words : Marine fish ,parasites, Scomberomorus commerson, Dicentrarchus labrax