Big Fish, Small Pond. Lake fly larva (chironomidae) catches a flatworm and devours it, all within a miniscule droplet of water. If you were to go outside and take a scoop of water from a lake, river, stream or pond, and then look at your sample under a microscope, your chances of seeing something similar are pretty high. You’re probably not gonna see a full-on predation event right off the bat, but you will most definitely be able to see microscopic life wriggling around on your slide. The exact