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Gill necrosis (mottled red and white patches on gills) — Possible causes

If your pet shows Gill necrosis (mottled red and white patches on gills), these are the conditions our knowledge base most commonly links it to. This is reference information, not a diagnosis.

If your pet shows severe or sudden signs, contact a veterinarian immediately.

Possible causes

Frequently asked questions

Gill necrosis (mottled red and white patches on gills) — Possible causes

Koi Herpesvirus

This article is for general education and is not a substitute for professional veterinary advice. If your pet is unwell, please consult a veterinarian.

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