I was in my daughters room this morning and looked in her tank but couldnt find her betta. I moved things around and found him hiding. His fins arent floating like normal, its like he is holding them in, and where his tail joins his body is a white spot that I havent ever seen before. He is by himself in unheated, unfiltered water(will have a heater tomorrow). Im thinking of moving him to a bowl with nothing else in it(maybe a few plants?) for a few days so we can keep a closer eye on him, but Im not sure what else I need to do.