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Anna
Anna, Koi Keeping-expert
Category: General
Satisfied Customers: 11137
Experience:  Biology degree, 35 years fishkeeping experience
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I have a koi that been with me 25 years and for two weeks

Customer Question

I have a koi that been with me 25 years and for two weeks his mouth is wide open. I look to see if he has a object stuck in his mouth but it's clear. And his gill don't look right almost like it's thinning. And now my small koi died which was about 15 years old. And it had like red streaks around its body. What can I do. Can they be save?
Submitted: 2 months ago.
Category: Koi Keeping
Expert:  Anna replied 2 months ago.
Hello and welcome. My name is ***** ***** I'm a biologist with a special interest in fish. I'm sorry to hear koi are having some problems. Some additional information will help me determine the best steps for you to take.Does the koi with its mouth open have any red streaks?Have you tested the water? If yes, what numbers in parts per million (ppm) did you get for ammonia and nitrites?How many other fish are in the pond? Do any of them have any symptoms?If you are asked to rate my service, please don't do that just yet since we are just beginning. Thank you.
Customer: replied 2 months ago.

The koi with the mouth open doesn't appear to have any red streaks but seems to have a lot of redness around the gill. I haven’t tested the water as of yet and I had total of three but now I'm down to two. I drain some water yesterday and removed all of the filters.

Expert:  Anna replied 2 months ago.
Thank you for getting back to me. The first step will be to get some water test results. In the spring and fall, pond water is especially variable. The best way is with a test kit using test tubes and chemicals you add to water samples. The paper strips you dip in the water are not as accurate. However, if you can't get a test kit, most larger pet stores will do the paper strip test for you free of charge. Just take in a sample of your pond water in a clean glass jar. While you're at the store, also pick up some pond/aquarium salt. We'll need that after you get your test results.I'll keep an eye out for the results.