The channel catfish is the fishmost susceptible to infection byEdwardsiella ictaluri, but white catfish,brown bullhead, and walkingcatfish are also susceptible. Bluecatfish (Ictalurus furcatus) occasionallycontract ESC but havebeen shown to be resistant toexperimental infection.Edwardsiella ictaluri has been isolatedfrom diseased ornamentalfish such as the danio, green knifefish, and rosy barb. Other fishspecies, such as the rainbow trout,chinook salmon, blue tilapia andEuropean catfish, have beenexperimentally infected with thebacterium, but natural outbreaksin these species have not beenreported.
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