Koi fish diseases are easier to spot if you become familiar with your koi’s behavior. You can learn to spot the common symptoms. Here we will cover these 3 koi fish sicknesses: anchor worm, white spot disease, and fin/mouth rot.
Melissa is terrified that she did something to hurt her precious koi fish.
Some are moving slowly, almost like they are going in slow motion. Others are rubbing their scales against anything they can swim near (flashing). She also hasn’t seen much of Elvis Fishley lately. He’s her favorite but recently he’s been very shy, almost like he and a couple other koi are hiding.
She takes a closer look and immediately knows something is wrong.
A few of her koi are swelling up like little balloons. Others have swollen eyes, missing fins, discoloration, and other issues. They are definitely sick, and not with the same disease.
She needs to find out what is attacking her poor koi.
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Melissa walks back inside her house. She immediately sits down in front of her computer and opens up her Internet browser. She wants answers and she wants them now. If her fish are in danger she wants to know before she starts calling every veterinarian, fish doctor, or whoever might be able to help.
After a few hours of research, Melissa comes up with 3 diseases that are the likely culprits.
These are 3 common koi fish diseases pond owners see in their backyard water features:
(clicking the links above will scroll this page down to that disease)
Let’s take a look at what each of these koi sicknesses looks like and possible treatments.