The process of fish fattening is considered an important economic and agricultural activities carried out by the breeder with the aim of obtaining a rewarding financial return, as this fattening process can be compared to an integrated industry that transforms feed in its various forms into a final product in the form of fish with an appropriate market weight, using simple means of production. It is available locally. And it is considered one of the economic operations with high returns if it is carried out in a sound scientific way so as to provide the fattening fish with the nutritional requirements necessary for growth as soon as possible to reduce the cost of production. Which is basically a profit-oriented trade. This profitability ranges at least between 15-20% of the value of the invested funds in a period not exceeding seven months, if there is good nutrition, careful management and vigilance, but if it is not based on sound assets, the loss will inevitably occur, and for We succeed in implementing fattening programs. This process must be adopted by the private sector, with the encouragement and support of specialized ministries. Perhaps finding cooperative societies for fish fattening and breeding is one of the best solutions for the success of fattening projects, with the special services provided by associations, such as providing feed, health care, and operations Marketing in cooperation with government institutions. Basically, the fattening processes in fish depend on small fish that are still in the growth stage, i.e. their weight averages between 15-25 g, because they are characterized by rapid growth and good use of the feed provided, in addition to their ability to give large quantities of good quality meat. Fish is of nutritional importance as an alternative to animal protein and medicinal as a source of iodine, in addition to the possibility of using it in various feed rations. Breeding it, along with agricultural projects, constitutes a source of income for the farmer and leads to contributing to providing the necessary cash flow for other crops, and it hardly costs anything. The Nile comb fish is characterized by a rapid growth rate, its tolerance to the deterioration of the characteristics of the aquatic environment, its resistance to diseases, its high ability to benefit from natural and industrial food, in addition to its tolerance to a decrease in the rate of dissolved oxygen in the water and its high susceptibility to the consumer.