My last night my clownfish started acting weird, but I went to bed thinking that he'd be fine in the morning. This morning I woke up to see him laying on the floor of my tank. I tried to gently lift him with the net, but he started swimming away. I watched him swim for a bit and noticed that whenever he stopped pedaling his fins he would start sinking immediately. He ended up getting tired and layed on the floor again. This is all out of the blue. The only new things in the tank are some xenia, a couple snails, and a peppermint shrimp. They were added on Saturday, and the only thing that seems to be acting weird is the peppermint shrimp- I can't find it anywhere. Could this be his doing? The place where I got them is really good with quarantining and dipping, so it shouldn't be a parasite. Is this a life threatening condition for my clownfish, or will he just live like a goby for the rest of his life? Thank you so much!