Factors that predispose fish to this disease include stress from transportation, overcrowding, poor water quality, poor nutrition, underlying parasitic or fungal infection, physical injury from netting, and high bacterial loading of the water from diseased fish. | Factors that predispose fish to this disease include stress from transportation, overcrowding, poor water quality, poor nutrition, underlying parasitic or fungal infection, physical injury from netting, and high bacterial loading of the water from diseased fish. |