The net profit of an acre of land is basically maintained at1.5-20,000 yuan. Moreover, the growth cycle of Egyptian fish is short, basically 80 -90 days, and it can produce two seasons a year. According to this calculation method, assuming that the area of fish farming in Egypt is 1 mu, and the minimum annual net profit is 1.5 million/mu×1mu× 2 seasons = 30,000, the profit can be said to be very high.