I noticed suddenly one of my clown loaches laying on his side in the bottom of the tank....thought he was dead, but then he moved as if he was trying to swim up for food but just kind of swam in circles upside down. My water is fine, all my other fish in the tank are fine, There is no evidence of disease at all. He has been this way for 4 days now. He even attempts to eat off the bottom like he is suppose to, but has a really hard time because he cant seem to get off of his side at the bottom of the tank. It almost looks as if his back is broken! I feel so bad for him, but I dont know what to do! Let him stay this way or put him out of his misery? Also, he seems to be breathing kind of heavy. I thought for sure hed be dead by now, but he looks so healthy otherwise and he tries to eat! Any thoughts or suggestions? Thanx!