Koi care collection

Koi Fish Diseases

A growing library of clear, useful guides about koi fish diseases.

Do I Need To Leave My Pond Pump On All The Time?
Koi FishJun 26, 2022

Do I Need To Leave My Pond Pump On All The Time?

A pond pump is a mechanical device that is used to circulate water in a pond. There are many different types of pond pumps available on the market, and each type has its own set of benefits and drawbacks. For more pond-care guidance, read What Do You Feed Small Koi? and review…

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What Is The White Fuzzy Stuff Growing In My Fish Tank?
Koi FishJun 26, 2022

What Is the White Fuzzy Growth in My Fish Tank?

The white fuzzy stuff growing in your fish tank is most likely a type of algae. Algae are a group of plant-like organisms that range in size from single-celled microalgae to large kelp. For more pond-care guidance, read What Happens When You Mix Salt With Peroxide? and review…

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How Do You Treat White Spots On Koi?
Koi FishJun 26, 2022

How Do You Treat White Spots On Koi?

Koi are a type of fish that are popular in both ornamental ponds and aquariums. They are a member of the carp family and are native to East Asia. For more pond-care guidance, read Can I Feed My Fish Worms From My Garden? and review MSD Veterinary Manual: Fish diseases.

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Why Is My Fish Laying On Its Side?
Koi FishJun 26, 2022

Why Is My Fish Laying on Its Side?

There are a number of reasons why a fish may lay on its side. It could be a sign of illness, or it could be that the fish is not feeling well. For more pond-care guidance, read Can I Feed My Koi Cooked Rice? and review MSD Veterinary Manual: Fish diseases.

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Can I Add Water Conditioner While The Fish Are In The Tank?
Koi FishJun 26, 2022

Can I Add Water Conditioner While The Fish Are In The Tank?

Adding water conditioner to a fish tank is a common practice among fishkeepers. Water conditioners are used to remove chlorine and other chemicals from tap water that can be harmful to fish. For more pond-care guidance, read Can I Have A Pond Without A Filter? and review MSD…

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What Is Killing My Koi Fish?
Koi FishJun 26, 2022

What Is Killing My Koi Fish? A Safe Troubleshooting Guide

Koi fish are a popular type of ornamental fish that are often kept in outdoor ponds. They are a member of the carp family and are native to East Asia. For more pond-care guidance, read Can Koi Live In A Natural Pond? and review MSD Veterinary Manual: Fish diseases.

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Why Is My Koi Carp Lying On Its Side?
Koi FishJun 26, 2022

Why Is My Koi Carp Lying On Its Side?

Koi carp are a popular type of ornamental fish that are often kept in ponds or water gardens. They are a member of the carp family and are native to East Asia. For more pond-care guidance, read What Water Temperature Do Koi Need? and review MSD Veterinary Manual: Fish diseases.

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What Happens If You Put Too Much Water Conditioner In A Fish Tank?
Koi FishJun 26, 2022

What Happens if You Add Too Much Water Conditioner?

If you put too much water conditioner in a fish tank, it can cause problems for the fish. The water conditioner can change the pH of the water, making it harder for the fish to breathe. For more pond-care guidance, read How Do You Treat New Pond Water? and review MSD Veterinary…

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Do Fish Recover Tail Rot?
Koi FishJun 26, 2022

Do Fish Recover Tail Rot?

Tail rot is a common ailment among fish, and it can be quite serious if left untreated. Fortunately, tail rot is usually not fatal and most fish recover fully with proper care. For more pond-care guidance, read Do Koi Eat Guppies? and review MSD Veterinary Manual: Fish diseases.

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How Do You Put Uv Light In A Koi Pond?
Koi FishJun 26, 2022

How Do You Put Uv Light In A Koi Pond?

Koi ponds are a type of garden pond that is typically used to house koi fish. In order to keep the water clean and free of harmful bacteria, UV light is often used. For more pond-care guidance, read Can A Koi Turn Into Dragon? and review MSD Veterinary Manual: Fish diseases.

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Why Is My Koi Staying On Top Of The Water?
Koi FishJun 26, 2022

Why Is My Koi Staying On Top Of The Water?

Koi are a type of fish that are often kept in ponds or aquariums. They are known for their brightly colored scales and their calm demeanor. For more pond-care guidance, read What Goes In The Bottom Of A Koi Pond? and review MSD Veterinary Manual: Fish diseases.

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Do Koi Fish Get Bored?
Koi FishJun 26, 2022

Do Koi Fish Get Bored?

Koi fish are a species of freshwater fish that are popular in both aquariums and ponds. They are known for their bright colors and patterns, and their calm demeanor. For more pond-care guidance, read Should You Vacuum A Pond? and review MSD Veterinary Manual: Fish diseases.

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