hi guys one of my discus fish over the last 24 hrs has started acting really odd not sure if its male or female ive seen its spinning round really fast swimming upside down then swimming in really fast small circles and then it plays dead for 2mins and swims as normal is it dying or could it be trying to mate with my other discus its really weird to watch ive also had to close the top of the tank leaveing a small gap so the tank doesnt build up with too much condensation the reason ive done this is becouse its jumping so high i dident want it jumping out of the tank if any one knows why my fish is doing this then your advice will be a big help