What does epizootic ulcerative syndrome (EUS) do to the fish? Clinical signs of EUS in affected fish showing the range of lesions
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©FAO/D. Huchzermeyer, Rhodes University
US causes unsightly lesions in affected fish. EUS-affected fish may swim slowly, show abnormal swimming movements, and in rivers may be observed near the riverbanks swimming with the current where healthy fish swim against the current. Sick fish will also seek out shallow vegetated areas of still waters.
©FAO/D. Huchzermeyer, Rhodes University
Figure 5. Labeo lunatus – upper Zambezi labeo with early lesion of epizootic ulcerative syndrome (EUS). Note red appearance of the lesions and swelling of the surrounding tissue, Chobe River, Botswana, 2007 (Andrew et al., 2008).
Figure 6. Clarias gariepinus – Sharptooth catfish affected by epizootic ulcerative syndrome (EUS) showing both the red spots that are typical of early infection and the large, deep ulcers that develop later. Fish sampled during an EUS outbreak, Bangweulu swamps, north Zambia, 2014.
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