Background and Theoretical Foundations: Fishery is one of the fastest-growing food sectors throughout the world. The increasing demand for products creates massive fishing pressure on natural stock, especially in the open-water ecosystem. Fish are now considered as assess the life history traits i.e. growth, reproductive characteristic, recruitment pattern and mortality to ensure sustainable management for conserving the wild stock. Growth pattern help explain how populations behave under different environmental conditions. The basic purpose of fish stock assessment is to provide advice on the optimum exploitation of aquatic living resources such as fish. Living resources are limited but renewable, and fish stock assessment may be described as the research for the exploitation level which in the long run gives the maximum yield in weight from the fishery.  Length-frequency distribution is an important biometric index to assess the dynamic population of fish. The purpose of this paper is to describe the growth pattern, growth parameters and mortality of P.argenteus in the north of the Persian Gulf.
Methodology: In this study, considering a panmictic population for stock of P. argenteus in the Persian Gulf, on a monthly basis from April 2017 to April 2019, 4,236 samples were bio-assayed. The growth of the fish was assumed to follow the von Bertalanffy’s growth function. To calculate natural mortality, Pauly empirical was used. The total mortality rate (Z) was estimated using length converted catch curve method. The fishing mortality has been calculated from M and Z as F= Z-M.
Findings: The mean and standard deviation of the fork length of the P. argenteus population in the whole period was 23.48 ± 1.19 cm. The coefficients of the relationship between length and weight for index (b) were equal to 2.95 and index (a) was equal to 0.048. The amount of growth parameters estimated by Shepherd and ELEFAN methods for infinite length is 417 and 418 mm, growth coefficient of 0.43 and 0.47 per year and t0= -0.32 and -0.25 per year were estimated. The growth standard index (Ǿ) was calculated to be 2.87 and 2.91, respectively. Using the inverse Bertalanffy equation based on the results of Shepherd and ELEFAN, 8 and 7 age groups were estimated in the capture composition, respectively. Total mortality was estimated at 4.83 per year and natural mortality at 0.87 per year.
Conclusion: The results of growth and mortality parameters showed that the stock of P.argenteus are under fishing pressure and for fisheries management of this stock, the data of all stations should be used.