Don't know if this is a big deal. My new Niger has startied laying down in the corners of my tank. I've only had it for two weeks. He just started this Tuesday. It will do this for 5-30min. at a time. Then he's up and swimming around, like nothing is wrong. He eats very good. All test on water are good. I did some reading on this and seems somewhat normal. Just thought i'd ask and see what you thought about this.