I have to agree, that take it really small. You could probably find a cheap upgrade on craigslist or even a thrift store. Something that will do until the pond is done. If one of your fish has already died then that should be a sign.

I don't mean to sound mean. Its just that fish really need room. Alot of people don't realize that. 10 gallon per fish is the smallest I'd recommend. Of course it depends on types of fish and what not, but still.

I hope that pond gets done soon!