During the present work, breeding experiment was undertaken to study the intra-specific crossing of two Egyptian populations from African catfish (Clarias gariepinus), El-Manzalah catfish (MCF) characterized by tolerates for poor water quality and easily farmed in captivity and El-Qanater catfish (QCF) characterized by rapid growth and high quality flesh, for hybrid vigor, growth and production to create new high quality products. Crosses of these populations were carried out inEl-Gamalia hatchery, El-Manzalah, Egypt, during spring of 2008 between MCF$ x QCFtf. African catfish hybrid, MCF and QCF fingerlings with a mean weight of 24.02±1.38g were stocked at a density of 50 fish/m3 in cages (112 m~3 each) suspended in lake El-Manzalah. Fish were feda formulated diet containing 31.20% crude protein and cultured for 214 days.
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