3 koi died in my pond in one day?

Question

I have several goldfish and chubb as well but only the koi died anyone know why?

It did rain alot on the day, but hte fish i had for about 4 years.

Answer 1

Did you add any water? Did you put any chemicals in it? If any kids, did they do anything to it? Are your fences locked?
Many possiblities.. I have a pond too.

EDIT:
AFTER READING YOUR ADDITIONAL INFO

So it rained alot that day?
Possibilities are many
The rain could be polluted. Was it warm that day? Sometimes warm weather can reduce oxygen. Too much rain can also sharply change the pH, so that is also a possibility. I would get the water checked. If you don't have any checking stuff, I would take a small cup or bag of water to the pet store and have them see.

Answer 2

Firstly, my sympathies. It's always sad when pets die. :(

There are many possible explanations for your fish dying.
In my experience as a fishkeeper, water quality is a frequent culprit of fish death, especially with koi and goldfish who are very sensitve to any lack of oxygen.
You can buy water quality testing kits for tanks and ponds, your local aquatic supplier would be able to advise you about those. Or maybe even test a sample of water. They should also advise you about the process of changing the water and getting a good chemical/bacteria balance back.
Heavy rain could have washed a contaminant into the water - (perhaps you've used some pesticides or plant food or something in the garden) theres probably not much you could do about that, rain happens.
If there are any water quality issues (as opposed to a koi-specific disease) the chub might be showing some signs of distress, too. Even if they dont seem obviously sick you might want to keep a check on their behaviour.


I wouldn't advise adding any new fish until you can be sure it wasnt the environment which killed the others. Good luck, though.

Answer 3

if it was humid the koi could have suffered lack of oxygen,plants aren't really any good as koi will eat them,you should always oxygenate the water with an air pump..also check the water quality for ammonia and nitrate levels,you may need to do a part water change.a good way of knowing if there is a lack of oxygen in the water is to put some orfe in,a lot of peps keep orfe as they do not tolerate poor oxygen levels,so you would visibly see if the orfe were in trouble you need more air,only thing is orfe can make koi skittish as they dart about.small water changes will help reduce toxins in the water,if your fish are flashing,ie rubbing against objects or flicking against the bottom of the pond,this also usually means poor water conditions or parasites,buying a bag of pond salt will help kill any parasites and also acts a a destresser.if you do do a water change it is always best to buy tap safe, as it takes the chlorine out of the water

Answer 4

I have a rather large fish tank in my room & I bought some Koi & everyone on here told me that they were going to die because of lack of oxygen & because they were too big for a tank . But that was at least 2 months ago I believe & they are all still alive

Hm ; I'm not a big fish person but if you just put them in there maybe they went into shock because of the water temp. change or maybe there was something in the water that killed them. Who knows - it might have even been that one of the fish was sick - Not sure good luck with the next batch though.

Answer 5

I am not a fish expert but you say you have chubb in your pond, where and when did you get them from. There is a possibility if you got the chubb from a river etc that they have infected your pond, it's only a guess as I had a similar problem.
Hope this helps.
Jimmy

Answer 6

Mine did too all in one night, 5 kois, and 12 goldfish. Stolen?perhaps. An animal visitor? Before these guys I lost 2 other koi but never a trace of them.

Answer 7

that's fairly available that one or both one in each of my concepts are happening. the first aspect is the addition of recent fish. anytime you upload new fish with out quarantining them, you threat the spread of ailment. So certain that's available that they are sick. that's a lot more advantageous tricky to diagnose a sick pond fish because you won't be able to word them as closly as you could in a tank. Do you word any sores? in the experience that they are all on the floor gasping, then you extremely probable have a tremendous number of waste interior the pond. try for ammonia, nitrite, and nitrate. you'll likely desire to apply a moist/dry vac to suck the crap from the bottom, and take out about 1/2 the water. this can make your water bill slightly severe, even with the indisputable fact that that's more advantageous acceptable than beginning over. be confident you be beneficiant with the dechlorinator. solid luck, and e-mail me once you've any added comments or questions.

Answer 8

I don't know where you live but the same thing just happened to a bunch of my friend's koi a few weeks ago. She is gonna take a sample of the water to a pet shop. Not all pet shops do that but you could call in advance and see.

Answer 9

Might be something in the water or something that only the koi are allergic to. Test the water to make sure nothing more can go wrong. Ask someone about the food you are feeding your fish, so nothing can go wrong.

Answer 10

this are some of the reasons I can think of:

1. they could have been infected with disease along time ago.
2. sudden change in their environment, the rain perhaps, has stress like sudden change in temperature, increase in water acidity, or any other factors that were not favorable to their living condition that leads to their death.
3. water could have been polluted that the Koi were not strong enough to tolerate the pollution.