Edwardsiella: Infections of Fishes.

Cultured fish are often under stress from crowding, low levels of dissolved oxygen, presence of excretory products, etc. and are susceptible to infection by many types of bacteria. Two important disease causing bacteria are Edwardsiella tarda and E. ictaluri, the cause of enteric septicemia of catfish ESC. Mortalities in cultured eel and catfish are caused by the adaptable and opportunistic E. tarda. However, E. ictaluri is more prevalent in catfish and often produces devastating mortalities on catfish farms.