Hey, I noticed my pleco eating flake food off the surface tonight. They seemed to have learned that the water is slower moving where the intake hose goes into the tank so they hang out there and wait for food to pass by. They started a few weeks ago by just staying on the glass and waiting for the food to bump into their heads, but now the bigger one is going out into the middle of the tank looking for floating food. It's really neat, I tried to get a video and some pics but my camera was dead, I'll get some soon though. Has anyone seen this kind of behaviour before?