Sander lucioperca is one of the species whose fishing has developed considerably worldwide during the last decades. However, the lack of scientific research and the ignorance of the bio-ecological of this species of important economic interest constitutes a great problem for the management of stocks in the Moroccan fresh waters. For this purpose, this study was devoted to the analysis of the population structure, morphometric relationships (length- length and length -weight) as well as von Bertalanffy's growth parameters (VBGP) using length and weight data of 1019 specimens caught at Al Massira Dam Lake between January and December 2019. VBGP parameters based on frequency-length (LFQ) data were estimated by the ELEFAN _GA method which is based on a genetic algorithm using the "TropFishR" package. These parameters are given as follows: L∞ = 88.87, K = 0.46 and t_anchor = 0.51. The growth performance index (φ') was 3.56, with a maximum age value of 7.62. In addition, the results showed a rapid growth of S. lucioperca and a major allometry demonstrating that this species has a significant weight growth. This study provides new knowledge, necessary for the assessment of stocks and populations, which could contribute to the implementation of new management strategies for the populations of S. lucioperca exploited at the level of the Al Massira Dam Lake in Morocco.