Ludendorff is possibly the strangest fish I've ever had. He's like a teenager wreaking havoc on his parents (me) for spite.... Today, I was clearing away dishes and notices the enormous bubble nest he had built was gone. Not like separated and moved to something else, but gone.
I'm going to do a water change now in a minute. I do know he's been showing extensive sensitivity to ammonia (perhaps) or something else in the water if it's not changed every 2 days. Could this be why he destroyed his own nest?