This study presents the first assessment of the morphometric traits, length-weight relationship, and condition factors of Sarpa salpa from the Ghar El Melh Lagoon in northern Tunisia. Specimens were sampled using traditional fishing gears to evaluate growth characteristics and population health. The results revealed a strong correlation between length and weight, with the species exhibiting isometric growth, indicating proportional increases in body dimensions. The relative condition factor reflected a healthy physiological status, suggesting favorable environmental conditions in the lagoon. These findings provide valuable baseline information on the morphometric and growth patterns of S. salpa, contributing to the understanding of its population dynamics, ecological adaptation, and sustainable management within this Mediterranean coastal ecosystem.