I have had this molly for about a year now and recently Iāve noticed she hasnāt been swimming around. She is just laying at the bottom of the tank. She seems like at some points she trying to swim but canāt. Itās like sheās moving her fins around but isnāt moving anywhere. Her tank was in need of being cleaned for awhile but we just decided to replace the tank altogether. We put 1/3 of the old water in the new tank to reduce the stress on her. We also put in some stress reducer in case this was the problem. But sheās still laying at the bottom of the tank. I can see sheās breathing and looking around but does anyone know whatās wrong with her?