The end result is often diseased fish from infections, such as netpen liver disease, amoebic gill disease, and parasites.
en.wikipedia.org These include measles, typhoid, hepatitis, dysentery, tuberculosis, diphtheria, whooping cough, leishmaniasis, (a disfiguring parasitic skin disease).
en.wikipedia.org Clinical signs vary with the severity and extent of the disease and include anorexia, marked weight loss, stertorous respiration and conjunctivitis with marked chemosis.
en.wikipedia.org The development of disease can occur rapidly, and symptoms in cats include skin ulceration, chronic respiratory infection, and necrotizing sinusitis.
en.wikipedia.org