الفهرس 
Introduction
Biological parametersOnly 14 pages are availabe for public view
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Abstract
Cyprinus Carpio is one of the most importance popular teleost species especially in the last years in Egypt. It has avery high groth rate and economic importance due to its cheap price and its bigger size.this type of fishes feeds on algae and grasses Also, the farmers began to culture C. carpio in their rice fields, and obtained good results in both increasing productions of fish.