# Ketoconazole for Fish (Fish Keto)

> Ketoconazole is an azole antifungal that disrupts the fungal cell membrane. It is used for fungal infections of the skin and body. Fungi (not bacteria or parasites).

Source: https://petremedyusa.com/medications/ketoconazole-for-fish/ · PetRemedyUSA

## Commonly used for

- Confirmed fungal infections
- Fungal growth on wounds or eggs

## Things to know

- Many cotton-like growths on fish are actually columnaris, a bacterial infection, not fungus. See our comparison guide before choosing a treatment.
- Not effective against bacteria or parasites.
- Treat in a hospital tank.

## Products

- [Fish Keto 200mg 30-Tablets](https://petremedyusa.com/products/fish-keto-200mg-30-tablets/): from $83.19

## Frequently asked questions

### How do I know if it is fungus or columnaris?

True fungus is fluffy and cotton-like and usually starts on damaged tissue or dead eggs. Columnaris is bacterial, often looks like a pale saddle or frayed patch, and spreads quickly. Our guide compares them side by side.