To investigate the immune protection effects of Pseudamonas fluoroscens vaccens on Carassius auratus gibelio and provide important scientific basis on prevention and treatment of red skin disease.Formalin-killed Pseudamonasfluoroscenscells(F-PF)and outer membrane protein(OMP)were used as immunogen to immunize healthy Carassius auratus gibelio with an average body weight of 100.0g±15.0g.Each individual was intraperitoneally injected with 0.2mL 1.0×108 mL formalin-killed Pseudamonas fluoroscens in F-PF group ...