الفهرس 
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Abstract
The present study was planned to investigate the following :
1-Detection of the clinical signs and postmortem lesions at the examined catfish Caliras garieplnus.
2-Determination of the total and seasonal prevalence of henneguyasis in diseased catfish.
3-Morphological and parasitological investigations of the isolated parasites.
4-Determination of the haematological picture of the infested fish.
5-Studies on histopathological alterations in the diseased fish.