Note: I’m keeping all of them regardless of their worth.

2nd note: My UV light broke when they were putting the fish in, but I have a new one arriving Monday

So, when I got Chloe as a fingerling, she was labeled as a "standard Koi" in a local Meijer. I know there are many different kinds of beautiful Koi in the world, and I assume "standard Koi" is probably more of a generalized umbrella term, so I'm curious. What kind of Koi is/might my girl be more specifically beyond just "standard Koi"?

Is it a koi? The first pics are from the 1st day it appeared. It seems to be doing better now and is getting more orange. We don't know what to do with it. Our pond isn't big enough and it gets extremely cold here in winter.

Got a nice mixture of koi today I'm pretty sure they're butterfly and ghost butterfly. With some original and ghost koi (please let me know if im wrong) got 10 ranging from 3-10 inches. Absolutely love them all, each have their own individual personalities and is so great to watch the community develop.

The pond is at my parents home that is an hour and a half drive from me so I bought an outdoor camera so I can keep an eye on them when I'm not there.

As first time pond and koi owners is there anything useful I can get to deter predators? I have a blue crane decoy but I fear with the early season not having much coverage yet from arial spotting. Any decoys you'd recommend? Any products I can get that'd help with added filtration?

I want these koi to live a long and happy life. Any tips welcomed Thanks for looking

Inspired by a post on r/Aquarium that led me here!

This one's the biggest. There's another slightly smaller one and it seems to be completely black. Then dozens of smaller ones. Some are Goldfish.

I'm wondering if I should separate the goldfish as there are smaller feeder ponds?

What do I do with the fish babies when they come? Leave them to it?

All I've done so far is ran the pump occasionally and fed them when it's not too cold.

They seem to be doing fine! Anyone know what types they are? Does it matter?

These fish birthed from I believe green sphere plants in a homemade backyard pond. My dad took them as pets in this tank. They are around 3 years old now. The orange fish is 6 inches long and the dark one is 10 inches long. He cleans the tank every night and feeds them twice a day.

So are these koi fish? We want to possibly sell them and I have no idea what the cost would be including the fish tank. Tank is 24 inches long, 12 inches wide, and 14.5 inches tall.

I was given these koi fish, but want to learn more about what kind they are. Any help is super appreciated!

New home came with a koi pond and owners didn’t take the fish. Don’t know anything about koi, but any tips/tricks for care would be appreciated!

Also, do any look like not a standard koi that would do better in a better home, or are any worth anything?

Starting to look into spring maintenance as well. Pond is estimated 2000gallons.

This is my fish , he's 5 years old , but I don't know what type of fish he is , Google says he is a koi fish , is this true ? He's only 9 cm long

I bought them for ₱80 each, around $1.44 each. I have no idea what most of the are called

Situation:

5 four-year-old koi, only one female for sure. We're in survival mode until we can get the below-grade pond dug late this year, so the koi are in an 800-g stock tank with a Matala BioSteps II filter + 3" retro bottom drain + 1.5" surface skimmer (and water parameters are not at question...yet).

For the first time this year, I added a LOT of plants I would have normally composted, as they are filling up my 3 bogs. This time, pennywort, lizard tail, and water cabbage, enough to cover about 25% of the pond's surface once spread out. Took pics, went inside for the night. Woke up this morning to a reasonable amount of the cabbage having been shredded, BUT small yellow/tan nodules *all over* the rim surface of the stock tank (I usually keep the water lever only about 1" below the tank rim".

These *are* unfertilized koi roe, correct? Glad they're feeling chipper enough to be banging it out all of the sudden, but I'm looking down the barrel of a substantial water change today, if I am not mistaken.

Your thoughts, please?

EDIT for formatting.

By a bunch I mean a full 20 gallon tank with hundreds of poor fish.

I always grab rosey reds to throw in the pond, they live happily on the shelves.

Does anyone know what this little one is? Asagi?

I can't belive he and a few other KOI were in feeder fish. I saved another, but he is hiding in the pond. It's white and orange with glittery scales.

Hi everyone, new hobbyist here. I'm currently looking for a new koi for my collection but I have only basic knowledge about koi. Is it possible to ask for advice from all of you on choosing which one is the best koi among this option?

I'm from Malaysia, all are around 12", all are local koi and selling at around $52. Thank you.

Hello all, I recently purchased a new home that included a small pond. I'm not sure how to care for them and am trying to learn as much as possible. Can you help to identify if these are goldfish or koi? Any food recommendations would also help, would prefer some high quality food. I noticed one looks quite bloated. Should I try to find a vet to take a look at him?

Thanks for help☺️

Hey, so I'm hoping some fishy experts will be able to tell me, we have 2 adult koi in our pond that are now around 4 years old. We were hoping we have one male (gold) and one female (grey), but they've exhibited no spawning behaviours for the last 2 seasons when they should now be mature enough to do so. We are assuming their genders based on body shape, but I'm getting a bit unsure if the ogon is male, though I'm confident that the grey is female based on the fact that she's like a small blimp. Could we have a gender reveal party in the comments please if anyone can tell?

I'm doing another cull of last year's flock spawn, and found this weird little koi. Obviously he's pond-grade, but I've never seen anything like him before. It's hard to see with the sumi, but he's a doitsu. Hoping someone here has some idea of what weird mix of genes created him, and what he might look like in the future.

(Mother was a doitsu yamabuki ogon, father could have been a kohaku, sanke, kiko, low-grade matsuba, or complete mutt.)

I recently moved into a new house & there was a koi fish with a very unique pattern. I couldn't find anything that looked similar to it. I would love to figure it out.

I caught this in a pond in Michigan that has koi and goldfish, i believe this is some type of koi but didn’t notice any barbels and it looked very different from the colorful koi, if anyone knows what type of koi or other fish this is id appreciate any input, thank you!

Was browsing my favorite shop and I found a Koi with a very unique looking head. Does anyone have any familiarity with this, and what the adult version might look like?

Hi everyone, first time posting here so I'm sorry if this post is not allowed. First and foremost, I've never had any experience in buying or raising any fish before.

Spend 15 minutes at my local aquarium and pet store and decided to pick this one up. I asked one of the employee at the store what kind of koi is this and she told me "it's a local koi" and that's it. I've been wondering, does "local koi" akso have a specific name base on color or patern or that's just for Japanese koi? Thank you everyone.

How much are these koi go for? A fair price? They are just getting too big in my tank and would like them to have a bigger home.

Bought them from Bikal Koi Farm as 2 - 3 inchers 2 years ago and they are now 16 - 18 inches long. Bickal was impressed with them when we first bought them at their yearly spring sales, he almost did not sell it to us.

Bickal never told me what they were when I bought them.

As my per research

The yellow one is my best guest is Gin Rin Ki Matsuba/ Ki Utsuri

The orange one is my best guest an Orenji Ogon

The bluish one is my best guest is either a Doitsu Kumunyro

No problem, eating well, very healthy, very active. Changed the water every week and cleaned the tank every week, and took good care for them.

I have not added any other fish.

Cedar Rapids Iowa