My blue and white marble boy, Louie, scared the heck out of me this morning. I was turning on the lights and despite trying to "wake" the fish without startling them I apparently failed when it came time to turn on the lights near Louie's tank. He suddenly streaked across the tank slamming into the end wall. Next thing I knew he was head down in a plastic plant in the corner, totally still. He didn't respond to anything. I went to grab a net. When I got back he had begun moving again. After a few minutes of swimming slowly he followed my finger across the front of the tank as he usually does. I fed him half his normal breakfast and watched him closely for the next couple hours. He seemed fine when I left for work and is acting normally this evening. Whew... what a scare! Do you guys think he could have knocked himself out for a bit or what?