Here's the story my parameters are perfect and one of them recently died. The fish wouldn't eat but other than that there where no visible diseases. Now I am afraid ANOTHER may be dying as he is bullied and he doesn't compete for food so I drop it close to him so he can get it. Now he is just sitting by the filter and against the glass and he doesn't look too hot... What should I do? Is it possible they came with a disease? The other four fish are looking beautiful though...