Imagine what must occur in Northern ponds during winter where all the fish must go deep. If there is nowhere to hide, the forage fish and panfish are vulnerable to predators.
I believe this is what typically occurs in ponds. Many pictures posted look like clay bottom swimming pools and posts refer to annually stocking minnows which never survive and spawn.
There are diving videos showing bodies of water where the bottom looks like a moonscape (few places for fish to hide) and others showing structure and habitat that look like a fishing paradise.
http://www.youtube.com/watch?v=sQdpJ1kSTZAhttp://www.youtube.com/watch?v=LpiOIx9RD1Ihttp://www.youtube.com/watch?v=THXRRh-ryfM
