Addressing several replies:
The pond was referred to as a "bass and bluegill pond" when I bought the place, though I saw neither (I don't think). The carp made themselves known, and there are other fish, that I have seen make some nice jumps to surface feed, but have not caught or identified them.
There are giant catfish in the creek next to the pond. I don't know if they are in the pond, but there ARE catfish. Comically, when I am flood irrigating my pastures, I will occasionally see a small catfish that made it through the alfalfa valves flopping around in the pasture, and I will grab it and toss it in the pond. I also see lots of crawdaddys that way. Last Winter, I did see about a 14" dead catfish wash up on shore, so I must have at least a few good size catfish there.
I bought 100+ bass fry a couple of years ago to try and stock the pond. I know bass are slow growers, but I think I lost most of the fry to the dang herons. Fish transport permits are easy to get from the DFG here, so at some point when I have time, I might go to one of the local public ponds and catch some more mature bass and release them in the pond.
I didn't find the above fish directly in the pond. I have a diversion pipe from my ag pump that I use to top off the pond through the season, and the last couple of times I did it, there were a bunch of the above fish flopping around near the pipe after I turned the water off, so they all came from the creek. I assume if there were a bunch near the pipe, a bunch more made it in the pond. I guess we'll see if it's too many and they don't get big, or if bigger fish in the pond bring their numbers down.
On the carp eating, we seem to be one of the few countries where carp are considered trash fish. In Germany, carp are served in restaurants. I had some there many years ago when my Uncle took me to a game restaurant and ordered me one of the "better" fish. I recall that I was shocked when I learned what it was, but I also recall it didn't taste bad. It was certainly much better than a yucky trout I remember eating at Lago Garda in Italy at the time. I would consider eating my carp here, but they seem to be such a hassle to prep with the rough scales and bones, and I'm lazy. I figure since the damn things are like swimming cockroaches that survive anything, they will make a good food supply when the zombie apocalypse hits.