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Head and lateral line erosion

"Hole-in-the-head" redirects here. For the bacteria that causes the unrelated disease of catfish, see Edwardsiella ictaluri.
A red oscar that has died while showing HLLE

Head and lateral line erosion, (HLLE) or hole-in-the-head (HITH) is a disease in fish. Chronic ulcerative dermatopathy or chronic erosive dermatopathy are symptoms of similar conditions with different etiology.


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Reikätauti Finnish

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