Aquariaddictus: I think that ponds tend to get short shrift in our hobby because folks tend to get fixated on the view through the glass (which, of course, ponds don't have). Mind you, I thought about having a "viewing trench" and 1" sheet of plexiglass added on one side, but then realized that was a really STUPID (read: expensive) idea. So I just look through the top of the pond and, quite frankly, although there are a few more reflections and some little ripples to contend with, the view from there is equally as interesting as any tank. Perhaps more so, because a much larger part of the biological cycle is present and functioning without any intervention on my part. I have fish, insects, plankton, and plants, and except for the fish and a few non-native plants didn't have to add anything to the setup.
Anyway, the "rosy reds" (and browns) I bought at Walmart really enjoy it. Luckier feeder fish there never were. (Just to relate these comments back to the original topic).