My fish tank

[iAdam]

Surely you are not leaving them outside in the middle of a garden?

This I hope.

If you really can't get a proper tank, get an air pump or something.

[Special]

Aww that's such a cute tank

But just get some plants (real) as they will provide the fish with some oxygen. They should'nt die but if you can't take a risk, get a cheap water tank with maybe a small filter & light etc, but this isn't majorly important as they are only goldfish

[herrfishhead]

There are many problems with keeping goldfish in there. With that many fish, the build up nitrates, nitrites, and ammonia will be fast and hit like a semi-truck. Lack of filtration means the water will not cycle and frequent water changes will be necessary. Keeping fish in that container is also bad because it distorts what they see and stresses them out. With leaving them outside, if you are, you are bound to get algae if your fish don't die. When keeping fish too, it's important to remember about an inch of fish per gallon, even less for goldfish, and I don't think that little container is more than 1 gallon. Are you using a water conditioner to remove the chlorine?

[StripedTiger]

see if you can attach a water pump and filter into it somehow, that'll keep the circulation going