I'm so confused. I've been worried about Sarah for the past few days. She has been rather lethargic and just lying on the bottom of the tank most of the time and then swimming around the tank at mock ten for about 10 seconds before resuming the lying on the bottom again. This morning I found Sarah swimming around happily and Speckles was floating on the surface. Murder?

Poor little Speckles, she was so sweet with her happy little tail darting around the tank.