GOLDFISH DIED THIS MORNING

[rvb20]

hi,
i have a man made outdoor contrete pond. around 300 gal.
a friend of mine gave me 6 little feeder fish that they didnt need anymore for mosquito consumption.
they grew and grew, had babies, and the babies grew and grew, leaving me with a total of 17 fish.
i never had one die before. the water is clear, proper filtration system .
they are fed twice a day, they get flakes in the morning, and hand fed pellets in the evening. i remove all fish poop once a day with a little vacuum cleaner type thing.
this morning i checked them, and there was 1 floating on top.
when i removed him, there was no sign of disease, as far as i could tell.
his fins, scales, and eyes looked normal.
is it a normal thing to have a fish die for no reason?
i would appreciate any reasons anyone could give me, as i am very much afraid that i will find another floating tomorrow. or tonight.
thanks, rvb20

 

[gar man]

First of all Welcome to MFK! And Second, what are the water parameters?

 

[Chris-Chicago]

And don't forget, Goldfish do not live as long as Koi. So Koi, 20-30 years old, very normal.... Feeder goldfish... if you got 5 years you did a really good job in my opinion.

 

[mshill90]

The lifespan of goldfish in captivity is about 10 yrs.. IF properly cared for all of it's life.

There has been record of 100 yrs for koi.

 

[Asianleful]

It could have been something just internally wrong with goldfish.

 

[kenjivaj]

Check your water ph first. It could be a deadly ph crash. And does it goldfish hits it head to the ground. It maybe the gill fluke.

 

[mshill90]

If it was a PH the other fish more than likely would have been affected since they are all the same kind of fish.

Feeders are often ridden with disease and parasites when begin, so something it got when small could have finally taken it's toll.

I DOUBT gill flukes. All the fish would be flashing on the bottom of the pond non stop.

Sometimes there is no reason a fish dies. It's just it's time to go.