Hi I have a Rosey Barb and it looks like it's about to explode. It swims around normal and doesn't act as if anything if wrong with it. It's always been a bit bigger than the others but it has gotten abnormally big looking lately. At first I thought maybe eggs, but it's been several weeks since it's been big like this and no sign of any eggs. I have attached several pics so you can see. Any ideas what it could be?