Hi my juvenile flowerhorn which I got not too long ago was fine when I got it but the next day the fish was on its side at the top of the tank. I think I may have fed it too many floating pellets the first day. I've already started fasting the fh for a day now and the floating on its side subsided but seems to float near the tube of the filter and near the heater. I've noticed some scales missing on the under belly and on one side of the fish. Could it be because the fish may have gotten close to my heater or could it be something else? Thanks in advance