Tag: koi carp diseases

How do you treat koi mouth rot?

First you can try hydrogen peroxide. Soak a cotton ball in the peroxide and dab the areas.

Take great care to hold the fish so that you do not get the hydrogen peroxide in the eyes, mouth or gills.

High salt .6% (6 pounds of salt per 100 gallons) used as bath for an hour or so

What causes red spots on koi fish?

Ulcers (red sores or spots) are fairly common in koi goldfish ponds
and can be caused by a several different things.

You need to treat ulcers in koi and pond fish as soon as possible.

In most cases ulcers are caused by parasitic infection, poor water
quality and even spawning.

Can koi scales grow back?

I’ve had koi loose scales in the past. IMHO, good water quality and warm water will aid tremendously in regrowing the scales.

When the scales were lost due to mechanical damage (jumping,
breeding, etc), they will grow back in about two months when conditions are right.