r/Koi

To me it seemed very unique and high value. I saw it at an airport decoration pond

Just wanted to share two special koi in my life. These two are the only ones who survived when the city started putting chloramines in the water about 15 years ago. This is In a courtyard off her bathroom, you can take a bath in an old clawfoot and see the pond, it’s awesome. She has a simple bog filter with parlor palm growing out of it. I know they aren’t really fancy koi but my grandparents got them when they moved into the house in 1988, when I was 2. I grew up feeding these fish and just relaxing by the pond, and hanging out with “Grampy” while he did maintenance and I probably fed them too much lol. My grandpa was primary caretaker of the pond for years, but he passed away 5 years ago , and she’s going to be 90 in a few months, maybe wants to give them away, but always goes back and forth.
How old do they get generally?

I ordered this “Grade A Tancho” and this is what I received, is this a Grade A Tancho please? I appreciate any help/ replies. Thank you.

Female shubunkin with nose ulcer after suspected spawning injury, Day 5 of medicated food

Looking for advice from experienced koi/goldfish pond keepers.

I have a large female shubunkin, roughly 9 inches / 23 cm, with a nose ulcer/abrasion. She is still swimming normally and eating aggressively. I’m currently on Day 5 of feeding Koi Pharma Bacterial Control medicated food, and she is eating it very well.

A few days ago, I lost a female white koi that had a similar ulcer issue. Her ulcer lasted for weeks, but at the time I did not have medicated food available. I was only doing water changes and regular pond maintenance. Looking back, I think I may have caught her too late, and I probably should have treated her earlier while she was still eating.

This shubunkin seems different because I started treatment earlier, while she still has appetite and normal behavior.

The pond is about 900 gallons / 3,400 liters. I have a waterfall, two air diffusers connected to an aerator, UV light, clean filters, and regular pond maintenance. My pond guy came yesterday and did a deep water change. I also added a double dose of API Pond Stress Coat afterward for slime coat and skin/wound support. I use beneficial bacteria weekly.

I do not see flashing, rubbing, clamped fins, gasping, or abnormal behavior from the fish.

My main theory is that this may have started as a spawning injury. Both affected fish were female, and I know females can get chased, bumped, scraped, or pushed into rocks/netting/pond edges during spawning. I’m not saying I know for sure, but that seems like a possible cause.

I also want to be honest: I don’t really have the time or setup right now to remove the fish, sedate/treat the wound directly, quarantine, and do a full hands-on treatment. That’s why the medicated food is the easiest and most realistic option for me right now, especially because she is still eating aggressively. I also don’t want to treat the entire pond with stronger pond-wide medication unless it’s truly necessary.

Current plan:

Finish the full 12–14 day Koi Pharma medicated food course.

Keep water quality stable.

Keep aeration strong.

Avoid stressing or netting her unless absolutely necessary.

Monitor the wound closely with photos.

Questions:

Does this look like a surface ulcer/abrasion that is still treatable?

Does medicated food plus clean water seem reasonable since she is still eating well?

Would you suspect spawning trauma based on the location and history?

What signs should I watch for that would mean the food is not enough?

I’m trying not to over-treat the pond or stack too many products. She is still eating aggressively and acting normal, so I’m hoping this is a good sign.

Any thoughts on how to control the algae that grows on these rocks that either have water flowing over them or get splashed. FWIW the Koi seem to enjoy eating the bits that fall in when I try to clean it (every month or so).

Thanks!

Hey everyone,

The other day my koi were going crazy in the pond all chasing one female. The pond was murky and they destroyed all the potted plants I had in there. So upon further inspection I found eggs attached to all the plants. I quickly arranged what I had and removed them into a smaller pond I have a bubbler and a small filter on. By the looks of the photos do the eggs look ok? I have never done this before but would like to see it through. Should I be doing anything else?

3 months different

From 25 to 45 cm

Head hit skimmer so there is bit of whitening 🤣🤣

Saki Hikari for my koi

Last year was a battle to keep the water even semi-clear. Much better this year, even with all the babies from last year!

I have a approximately 2000 gallon pond with mostly open space but one ledge where the fish can be out of sight. This fellow was out in the spring and did some eating for a week or two, but then disappeared for the last month plus. His fins look like he’s been through the war. Any thoughts on what might cause this behavior? I’m guessing he was sick and was recuperating but any thoughts would be appreciated.

My grandparents had a koi pond but they recently passed away. So in their honor we’re building a new koi pond at our house and are going to be transporting the koi when it is complete!! Can’t wait for it to be done! Upgrading from a 7x9 to 18x18!!

My mom got this ‘Koi’ fish a few years ago (looks like a goldfish to me but im not well versed in fish haha..) and last week she noticed these bumps on this dude. We dont know what it is and we just recently were able to catch him, is it something it could spread to others or is it cancer? Do we put it out of its misery? Is it even in pain? Please help! Can provide more photos if needed.

This is my new koi, I’m not sure what he is. Does anyone know?

His other eye is fine, I'm worried that this eye might be affected. Can it be treated at home, or should we take him to the vet?

I don't know exactly how old it is since I rescued it over a year ago along with another fish, and we also don't know exactly if they are koi or a long goldfish.

Recently had Kois get attacked, this survivor got a small scratch between his eyes and looks like a decent gash by his tail. The photo 1 was taken the next day (april 29th), while the 2nd photo where it looks like he's pineconing by his tail possibly? Was taken yesterday. I've added a common and cheap "antibacterial" to the pond for the week after but curious if people believe he has an infection that's getting worse and any possible home treatments. He still swims around spends time on bottom and near surface chilling sometimes like in photo where you can see scratch between eyes. Only new odd behavior is more lingering in 1 spot while in middle of day.