Frank is located in LI, but he works at the Brooklyn Aquarium. I've done local pickups there a few times. Just email him.
Interesting, his house is near mine on LI, never had a chance to stop by though. Magic Isle in Centereach on LI has plenty of Pygmy Cories. I asked them how often they had them, and the guy told me they have them all the time. Few different species of shrimp as well. Personally that is my favorite LFS for the LI/NYC area.