and like, you can just use 25 cent feeder goldfish. legitimately the local japanese restaurant wanted to buy ours (we were friends with their sushi chef) to use in their koi pond in their restaurant (or just take home) because once they're big, only an expert can tell the difference. a koi is a pretty goldfish basically. ours were named breakfast, lunch, and dinner because our pet oscar refused to eat them and we thought naming them after meals was darkly appropriate and might encourage him to eat them. it worked once., but not twice and then the fish were bigger than him. ours were the size of my foot. or forearm. same size.