Yesterday for the first time (that I know of) one of my rays swam upsidedown at the surface, slapping the water and making a lot of noise. Now that she got the hang of this, she does it all the time. My water parameters are fine. I did adjust the temp from 82 to 85 because I wanted the new Dats to feel more comfortable but I did this over the course of two days. Is she just having fun or is this a sign of trouble?
