Guess who hasn't unplugged the pond?
The bottom photo looks like Zracgar the radiated crustacean battling Bob the bumpy buffalo.
It's tempting to leave it running all winter just to see what it produces. I love waterfalls in the winter I'm just not sure if it's a good idea or not. I ran across a website advertising propane powered pond warmers, guaranteed to keep your fish at a toasty 50° all winter long. Only three thousand dollars!
Instead I should drill a big 'ol hole a couple hundred feet down. Setup a closed loop system of water being pumped down and back up, warming it to the 40 degrees or so of the earth's subsurface temperature.