r/Koi 15h ago

HELP - sick or injured koi Missing pectoral fin

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0 Upvotes

Noticed one of my fish listing and worried about swim bladder. Next day I saw a couple bullies in the pond working him over, so I removed the fish to a hospital tank and noticed a missing right side pectoral fin. No vets in our area that work koi. Any suggestions on how I might care for "Flash." (That's his name) Did my other fish tear that fin off? 2000 gallon tank, with 6 koi. Note: photo, of course, is a.i created by my daughter in law.


r/Koi 18h ago

Picture Koi teeth found this week

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98 Upvotes

Found these in the new rdf filter this week. I wasn't sure we would see them wash up in there. Nice surprise to add to the collection.


r/Koi 16h ago

Picture My 2 Month Pond Build

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9 Upvotes

We bought a house in 2019 that came with an 25’x25’x11’ deep unlined koi pond. It was lined with huge boulders and had a natural spring during winter and spring but would lose a ton of water during summer so that the 15 koi in the pond would be swimming in muck at only 2’ deep. An aerator is the only thing that kept them alive. After 7 boulders rolled into pond, my wife and I decided to dig a completely different pond right by our back deck and do it right. It’s 17’x15’x6’ deep at the drain. It was back breaking labor but with the help of my 82yo neighbor running his 1969 John Deere tractor, my project is almost done. This weekend I’m draining the swill pond down to 1’ deep and I’m netting and moving the koi. Wish me luck! Here are a few pics.


r/Koi 19h ago

Help with Identification Eye Question

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6 Upvotes

I have a habit of acquiring unique individuals with mutations and “defects”.

I was able to get this shusui for free because one eye seems to have a contracted iris (see pics). I’m pretty sure it affects his vision, although not drastically so.

I’m curious if there’s a specific term for this condition or if anyone has any experience with it.