My three spotted Gourami has been fine for two months but all of a sudden, he just stopped swimming... He sits on the rocks in the back of the tank and doesnt move... every once and a while he'll eat a flake of food but not very often... i've had my tank for two months and have had him and another Gourami since i started the tank... hes my favorite little fishy and i don wanna lose him.... ill try to put a video of it on youtube but i dont know if i can... if i go near the tank hell dart in a circle but go straight back to where he was and not move again.... please help me....