Aeromonas hydrophila bacteria cause Motile Aeromonas Septicemia (MAS) disease in catfish. The use of phytopharmaceuticals is carried out as an alternative for disease control in catfish. One of the materials that be used is the cinnamon leaf plant. This study aimed to test the effectiveness of the use of cinnamon leaf extract through feed as a control of Motile Aeromonas Septicemia (MAS) diseas…