My yellow tang looks like he forgot how to swim he is swimming at a 45 degree angle nose torwed the ground and when he does get off the ground he can't control himself and he runs into the rocks. I have no idea what is wrong with him all perameters are good exept ammonia is at 1 right now. All the other fish are acting normal and eating fine. I did recently move the live rock around and scince then he has stayed behind them in a little crevice and rarely came out. Nothing looks wrong with him eyes are clear and skin is clear. Any help is Appreciated.