My Plecostomus appears to be bloated. His belly is rather large, not larger than his body but still much larger than iv'e ever seen, not to mention iv'e noticed that he has been hanging out on the bottom of the tank. Not feeding, just sitting there on the rocks. At first i thought maybe he was dead but he swam away when i touched him with a net.

The other thing i was worried about is my rainbow shark keeps rubbing himself on different things as he swims by them. I dont see any white spots or anything else that would show signs of poor health. I was wondering if that is something they do from time to time or if I needed to be concerned.