To me this almost sounds like a joke, and I want to know if this is really a tradition...
I was at a dinner tonight with some vendors, one of whom was from New England. He was telling the group about a catholic tradition of burying a dead fish in the back yard on Christmas. He wasn't Catholic himself, and couldn't elaborate, but swore his friend's family did this as a tradition, and that it was a "Catholic thing".
Google is coming up blank, so I'm asking our Catholicism experts here: Is this truly a tradition, and if so, what can you tell me about it? Origins, meanings, etc.