This is not cool. Caesar has what I suspect to be a tumour on his side (I noticed this about a month or so ago and its gotten slowly bigger). It's between his pectoral fin and where his swim bladder should be on the left side of him. His scales poke out a little where the growth is too, so I think it's internal. It seems like his has a little bump on the other side of him, in the same spot, but it's not as nearly as big.
So what can I do guys? Is it really a tumour? He has a little trouble swimming (eg. swimming on a angle somewhat, floating a little off balance), but otherwise he's still trying to eat and making it for air. He'll rest more often on his leaf near the surface too....
Should I just make him as comfortable as can be? I suppose there's not much I can do anyways :c
Here's a pic (sorry for the giant size!)