Two Epidemics of Apparent Kidney Disease in Cultured Pink Salmon (Oncorhynchus gorbuscha)

Two epidemics of a severe disease in cultured, juvenile pink salmon (O. gorbuscha) are described. The symptomatology of the disease and the morphology of the stained bacteria found in tissue lesions suggest that the fish were affected by "kidney disease". If the presumptive diagnosis is correct, this report is the first record of kidney disease occurring in pink salmon.