And the better-looking the fish, the more a buyer is willing to pay. Yvo: Yeah, it depends. You can buy some small and cheap koi fish for a couple of bucks, but also, yeah, it can get up really ...

Read more: 50 Small Backyard Landscaping Ideas That Will ... not result in the untimely death of beautiful (and expensive) koi fish. If you've already purchased your galvanized steel stock tank ...

Among the most difficult to save are those that live in water. David and Jane Pierce have owned — and loved — these koi fish for 25 years.Credit...Stella Kalinina for The New York Times ...