Don't know where else to post this but my Gourami has been sitting at the bottom of the tank, not eating for a couple days. I came up stairs this evening and I thought he was dead however when I went to go net him, he tried to swim away but was swimming lopsided. I decided that taking him out was better than leaving him in there to suffer (I have neons in the same tank so didn't want them pecking at him) I took him out in preparation to flush him but he's been out of water for 15-20 mins and is still not dead. I feel so bad that he's suffering. Any suggestions? Forgot to add, recently came back from vacation and 3 of my fish were dead... Could it be stress from ammonia? I changed water but could it be stuck in the filter and sand?