Actually, people aren't always willing to spend $50.00 for a large Koi
. I've seen Craigslist ads with people unable to give Koi
away, so that is something to consider. And Koi
grow really fast, mine more than doubled in size in one year. But this year a heron got him, along with a few Goldfish
can be really messy, so you should consider adding a filter of some kind. Koi
are rather sensitive and don't do well in messy water, and a 320g tank is really small.
I'm sorry to be such a downer, just wanted to give you some things to consider. Good luck!!