Maybe the O2 load is too small. Anyway to bump up aeration? I know you said one of your pumps was bad, but maybe you can get a new one?

Your pond is so much larger than mine, I don't know how to aerate it better. I just use an aquairum bubbler, but I don't think that will work for you.

Good luck.

Isn't there a koi vet site where you can get professional help pretty quickly--maybe worth a try.
Mike

No advice to give other than hang in there and I sure hope thing turn around for you. I'm sure you're very worried.

Andrera, you could isolate the fish and put an air stone in the water to add more O2 as Groundbeef1 suggested.
It would also give you the chance to look the fish over.

I had one recently that was acting lethargic. I could not see any injury etc, until I removed the fish from the pond. There was an infected wound on the underside of the fish that I could not possibly see from above.
Good luck with the fish.
"Horton"
"

Tried to catch the fish but the pond is too deep (6') and big (25'x20'). No chance.

The initial one that was acting weird is not to be seen as of late afternoon. The other fish are not on the bottom anymore...but suspended almost motionless in the middle of the pond...all facing toward the falls. SO ODD>

I topped off the pond earlier and noticed that they went nuts when the hose was splashing..made me think oxygenation also.

I went and bought a 6500gph submersible and hooked it up w/ the 3900 I already had. The falls are definitely more rambunctios. All were still hanging in mid-pond when it got too dark to see. So bizarre.

HOrton, if the fish gets slower and I can net it, good call on checking the underside.

I will be sad if I lose it but hope that I don't lose the whole pond full of them! EEEEEK!

(PS why are the new little guys totally fine?????)

I know this is a bit unrelated but any koi vets out there know what to do for very pregnant fish that wont release her eggs.. I dont expect her to last through the night but I was hoping there was something I could do.. had another koi spawn so ammonia levels spiked so this didnt help her.. I feel a bit helpless she was one of my first koi.. She is now even more bloated and scales on belly are redening.. No raised scales, just was hoping maybe a manual release of eggs would help her.. I tried pressing her abdomen but was afraid to press to hard.. her privates are also a bit protruding.. its almost like she is constipated and if she could release she would recover.. anyway any advice in case this happens to another fish as I dont think she is going to make it and if it happens to another would like to know some info on what to do to assist..

for your bottom dwelling koi could it be a predator spooked it??

kevip, I have posted a link below for you to peruse.
They mention the use of Epsom Salts. I have heard of this previously. It is supposed to relax the fish's muscles and cause it to void the roe.
Have a look and see what you think about it.
"Horton"

Here is a link that might be useful: Egg bound fish

Ok everyone...all inhabitants look pretty normal today w/ the exception of the initial koi...I can't see him/her so don't know what its state is at this time. :(

I am happy about the others, though!!! Will keep you posted...thank you!

I KNOW I AM IN ALL CAPS BUT I'M EXCITED!!!!! LOL

All of a sudden, up pops my "ill" koi in the middle of the pond!!! She didn't come up for food this morning but suddenly was trolling for a snack. I sprinted (literally lol) back to the house for food, threw it in and she is acting completely normal!!!

I think w/ the spike in temperature, I had a low oxygen problem (????). That's the only thing I can figure.

All I know is that I am THRILLED and so relieved!

A million thanks to everyone for working this through with me. :) ;) :) :)

That's what it sounds like. My fish in my pond last spring were suffering a similar issue except they were gasping at the surface.

My pond is small enough that I used an aquairum bubbler and they perked up after a couple of hours. No problems since.

Glad they are doing better.

for pete's sake...she is laying back on the bottom and breathing heavily. Her belly looks fat...i wonder if she is eggbound..>????

going to research (sigh)

I salted the pond.. I dont have another holding tank for her.. she made it through the night and is just motionless now but still alive.. not really sure what else to do at the moment..

Well...I don't know what happened but everyone is fine now! I wonder if they were just loaded w/ eggs and feeling fat? LOL

Spawning o' plenty the last two days and everyone is wild and wooly.

WHEW>..drama averted.

Hi Ademink:

I raise about 1/2 tons of salmon and trouts and used to raise koi as well. What you have described is sometimes commun when females can not release their eggs for some reason (not enough oxygen, hardness too low, water temp too high, chlorine/chloramine or polutents in the water... During the re-absorption process, it may take a few weeks, it is important to oxygenate the water. My preference is to oxygenate by moving water with a pump, air stone may be more damaging. Oxygen bubbles from an air stone may get trapped in the gills preventing dissolved oxygen to cyrculate properly.

Salting does not solve all the problem...! As a matter of fact may creat others...

Do check your harness and alkalinity as you should anyways. Proper hardness will help eggs in their hardening process, render any polutents especially metals significantly less toxic to fishs, prevent pH fluctuation and along with oxygen helps the bacteria to process waste.

Have you noticed any eggs (white looking stuff) in the plants?

Hiiiiiiiiiiiiii RT!!! Nice to see you are still around!

My water tends to run hard. Noticed that the koi were eating eggs galore this morning in the plants and my sluggish girl lost about 5 lbs. LOL I'm guessing that was the issue for sure!

I have yet to have any baby koi...these guys don't miss an egg!

Good news Andrea.
"Horton"

Have been rooting for you and your koi. Hope all is still good

Hi all we have fairly new baby koi, all ok apart from one baby is struggling to maintain boyancy? Should I stop feeding them for a couple of days? The rest are fine, water has been checked all ok!

Hi I have four year olds and had only Brown babies they missed. This year I pot having and lettuce 12 and did not trim the roots. I now have 12 colored babies. Consider adding floating plants and marginal plays like Bacopa which forms a mat over the water's edge for the fry to hide in. Once they look like fish they will be fine. I am glad y o u fish are well and happy. Ps cut a cutie in half and push the wedges...they will love it!

Laura 116 does the one fish list or gulp air? I had one that did the same and verified no sores good slime coat etc. Turns out it was her swim bladder....she is fine and we named her Flopsie. You can treat with Melafix and Prazi Pro but consider separating the Koi infill you determine she/h e is not ill. Good luck!