Bay leaf (Syzygium polyantha) have antibacterial compounds such as flavonoids, essential oils, tanins, vitamin C and minerals. The purpose of this study was to analyze blood picture and obtain the best dose of bay leaf solution to cure the Clarias gariepinus that was infected with Aeromonas hydrophila. The metdhod used was an experimental method with a Completely Randomized Design (CRD), o…