I purchased a dwarf blue Gourami maybe three or four months ago and he has been doing just fine. I thought it might’ve been acting weird the last few days. It seem to stay more towards the bottom of the tank. Today I noticed it behind the filter intake at the top of the tank. It’s barely moving and all it does is sit there and breathe at the very surface of the water. Also his tail fun look sightly torn and his color is faded. The parameters were fine when last checked but I don’t have an at home test kit. The temperature is good. Shares a tank with 4 serpae, 2 platy, 3 Cory cats