Numerous species of fish can be affected.
Typically open wounds in the skin and flesh.
Seriously affected fish may be pop-eyed and have a fluid-filled gut (dropsy).
Human infection is possible, but rare. Some bacteria can infect human skin through open wounds.
How Bad Can It Get?
Humans are typically not susceptible to the bacteria that cause fish ulcers, but some skin infections may require antibiotic treatment.
Symptoms in Humans
Red and/or swollen areas surrounding cuts or wounds from handling infected fish.
Yes. There is no known health risk when fish are properly cooked.
In freshwater game fish, the most common causes are three bacteria in the genus Aeromonas; in striped bass and hybrid striped bass, Mycobacterium ulcerans and M. marinum; and in channel catfish, Edwardsiella spp.