Yesterday DH went outside to clean the filter on the pond.  When he came in he said we had a new fish!!  Now, we have two koi, and two large goldfish.  We had lost one fish last year and replaced it....that fish is getting larger.  But this fish is as big as our goldfish and completely black.  I have no idea how it got into the pond...or how we didn't manage to see him since now.  It's a Christmas miracle....LOLOL.....