This study aimed to investigate the morphometric relationships of fiddler shrimp caught in the coastal waters of Hormozgan province. Monthly sampling was conducted from October 2023 to January 2025, using bottom trawlers in areas around Qeshm, Hormuz, and Sirik Islands. A total of 615 specimens (414 females and 201 males) were biometrically analyzed after transfer to the laboratory. The recorded results during the study period showed that the range of carapace length and weight for male shrimp varied between 8.5-16 mm (with a mean of 12.70 ± 0.11 mm) and 0.47-2.86 g (with a mean of 1.70 ± 0.04 g), respectively. For female shrimp, these ranges were 7-23 mm (with a mean of 15.85 ± 0.13 mm) and 0.36-6.52 g (with a mean of 2.88 ± 0.06 g), respectively, indicating that female shrimp were larger and heavier than males throughout the study period. Changes in the monthly mean carapace length of the shrimp revealed that from mid-winter to mid-spring, the mean carapace length was at its highest, while from summer to mid-autumn, it was at its lowest. The numerical value of 'b' in the carapace length-weight relationship was 2.85 for males and 2.55 for females, indicating an allometric growth pattern in this shrimp. The body length-total length relationship was calculated as BL = 0.82TL + 0.53 for males and BL = 0.84TL - 1.05 for females. Additionally, the carapace length-total length relationship was CL=0.21TL-0.95 for males and CL=0.25TL-3.33 for females. The results demonstrated a strong positive correlation between all the mentioned components in these relationships.