The fish production sector is one of the main sectors that can contribute indirectly to bridg the food gap from meat. Fish 
production is a biological industry production that requires certain climatic needs that are not available throughout the year, which leads to seasonal fluctuations in fish production. The research studies the seasonality of fish production to regulate the quantity supplied throughout the year and reduce price fluctuations, and analyzes the data using Multiplictive model of the components of the time series to analyze the seasonality, in addition to the expected trends in the quantities produced from natural fisheries to increase the efficiency of some marketing functions such as storage, transportation, or conversion. The results of the study showed that natural fisheries contribute a small percentage to fish production at the level of Egypt, which requires attention to natural fisheries and work on their development. By estimating the seasonality of fish production, it was found that the maximum indicators for the quantities of fish 
produced from natural fisheries ranged between July and December. Therefore, prices will decrease as a result of the increased supply of fish during that period.