Well Josh that depends on the size of the minnows of course, but two to three inch fatheads should run around 100 to 150 per pound, of course +or-. I would just buy 1 (ONE) pound and see what you got and also to see if all goes well in the tank you are gonna' keep them in. Good luck. Golden shiners should be close too, to that amount/ pound. If they start coming to the top, and gasping for air, there are too many in there for the oxygen. Keep an eye on temp. Ask seller what the water temp is that are coming from and try to keep it as close to that as possible. If city water you will need to do something about that or they will die.