Enteric redmouth disease, also known as “Redmouth disease” is a bacterial infection of marine and freshwater fishes. First discovered in Idaho in the 1950’s, this condition is commonly found in rainbow trout.

Depending on the stage of the disease, several antibiotics are available for the treatment of Enteric redmouth disease.

Enteric redmouth disease is characterized by subcutaneous hemorrhaging of the eyes, fins and mouth. Once the disease progresses, Enteric redmouth disease could lead to hemorrhaging of the internal organs. The later stage of this condition causes the intestines to be filled by a yellow fluid.

Enteric redmouth disease is caused by the pathogen Yersinia Ruckeri. Some fishes act as vector for the disease, which could lead to spreading to other parts of the world. Such vectors include the seabream, seabass, farmed turbot, emerald shiner, farmed whitefish, goldfish as well as Atlantic and Pacific salmon.