We're losing our first fish today. One of our cory cats is currently in the process of dying. She's lying on her side, breathing heavily. She has moved a couple of times, only to wobbly swim nearby and land on her side again. My question is this... can I let her die in peace or do I need to remove her now? She has not signs of disease. Her skin/scales look fine. I just hate to bother her or cause her more trauma if I don't have to. We've only had her for a couple of weeks. Thank you.