eelskimmer:
If you want to wander into Boston, there are a few chinese grocery stores that carry them. Some chinese restaurants also will if they have a live tank, so you might want to call around the closest ones near you. The market in Quincy that should have them is
http://www.kammanmarketplace.com/
If they don't have it, check the restaurant to the right (south garden) and left (china pearl).