الفهرس | Only 14 pages are availabe for public view |
Abstract The aim of this work is to study the biological aspects that affecting the production of the Nile Catfish, Clarias Lazera fingerlings. The biological aspects involved its breeding, reproduction, the effect of stocking density, feeding, light and water quality on the growth and survival rats of fry, in addition to morphological and skeletal abnormalities and parasites. |