Hemorrhagic patches

Red blood spots

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Epidermis

The thin, outer layer of the skin that is visible

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Frayed fins/ fin rot

Frayed fins/ fin rot

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Ulcers

Open wound in the skin

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Clamped fins

The top or dorsal fin lies down or held close to the body

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Exophthalmia

Bulging out of fish’s eye

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Nodules

Bumped, enlarged infected cells

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Lateral line

See image 13

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The appearance of large white patches on the body

White spots

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Cloudy eye

White /cloud-like appears on the eye (image 21)

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