Go to local bait shop, buy dozen minnows, post good photo of minnow here, we will ID for you. Once we determine species you can go buy a few dozen, and as long as the pond is deep enough to prevent winter kill, you'll have thousands by next Summer. No need to break the bank, or drive all over MD to hatcheries. Fatheads are [in the midwest] the most common baitfish sold. Might be different out your way - could be a shiner species or different minnow. Good luck.