This research was conducted from June to August 2025 at the Fish Nutrition Laboratory, Faculty of Fisheries and Marine Sciences, Riau University. The study aimed to determine the effect of incorporating gamal leaf meal (Gliricidia sepium) fermented with EM-4 (Effective Microorganism-4) in feed on the growth, feed efficiency, and survival rate of common carp (Cyprinus carpio) fingerlings. The re…