Jungga lime (Citrus jambhiri L.) is a natural ingredient that can be used as a feed additive due to its content of alkaloids, saponins, tannins, flavonoids, and vitamin C wich are antibacterial. This study was conducted from August 2024 until April 2025 at the Laboratory of Fish Disease and Parasites, Faculty of Fisheries and Marine, Riau University. This study aims to determine the best dose o…