North Sinai province has a comparative advantage in producing huge quantities of mullet, which amounted to about 722.6 tons in 2017. As for the nature of the productive activities of fish manufacturing projects, it is found that there are 8 factories engaged in the production of municipal fusic, as opposed to 6 factories engaged in the production of farm hatching, in addition to about 5 factories for the production of potatoes within the city of Al-Arish. The results indicated that the average volume of investments amounted to about LE 34.9, 31.4, 106,000 within the municipal mosaic industry, a farmer's skewer, and a chicken, respectively. The average monthly worker's rent was LE 814.4, 714.8, 1218.3, while the average production capacity was 624, 518, 142 kg for the above-mentioned projects in the same order. And about the costs of the fish industry indicated that the total costs of the potato industry amounted to about LE 77 thousand for the plant, equivalent to LE 542.1/kg, contributed by the changing costs about LE 63.4 thousand, equivalent to LE 446.5/kg, representing about 82.4% of the total costs, while the costs contributed one bit in the rest. Rental costs are the first among fixed costs, while the cost of the raw material ranked first among the variable costs, with a relative significance of about 78.15%. About the total costs of the farm hatching industry, it amounted to about LE 36.6 thousand for work, equivalent to LE 71.1/kg, in which the variable costs contributed about LE 32.1 thousand, equivalent to LE 62.2/kg, representing about 87.5% of the total costs, while fixed costs contributed to the remaining part. Rental costs rank first among fixed costs with relative importance of about 6.9%, while the cost of the raw material ranks first among variable costs with relative importance of about 81.8%. About the total costs of the municipal mosaic industry, it amounted to about LE 58.3 thousand, equivalent to LE 93.4/kg, in which the variable costs contributed about LE 53.2 thousand, equivalent to LE 85.3/kg, representing about 91.3% of the total costs, while fixed costs contributed the rest. Rental costs rank first among fixed costs with relative importance of about 4.7%, while the cost of the raw material is the first among the variable costs, with a relative importance of about 87.2%.