I'm curious if anyone has any methods they use to ensure that feeder fish are safe and healthy before putting them in their tanks (to ensure that you don't introduce ich or other parasites into the tank). I suppose a quarantine tank could be used but it seems like a lot of effort for a fish that's going to be eaten promptly. Also, feeder goldfish never really look all that healthy in stores, but that's probably largely because loads of them are stuffed into small tanks.