just went to the LFS and got 24 little kois for 3 bucks. These come in handy when my dads friends ask for my koi haha dont give the big nice ones but the rather cheapies
I saw a very nice looking, healthy red and white koi (it had longfins like a butterfly koi, too) mixed in with some dull orange feeders once at Petsmart. But store policy was that you couldn't pick what feeders you got.
Tell them that's a load of BS. We had lots of people who could only use the orange feeders for their turtles. I always let people who were obviously making a pet out of it pick their feeder.
Small koi and tadpoles is all we ever got. Once we got a bull frog tadpole. That thing was HUGE! I just ran into the guy who I gave it to a few weeks ago. He actually managed to grow it to maturity and then it escaped.