Calling all fish Doc's

[Seamonkey]

Hi Brad,
This puffer was young, cause he was really small, and has grown alot over the 4 years. I did notice something else tonight. Don't laugh, and I don't know if it's possible, but I think he may either be constipated, or have a tapeworm. I think he looks larger in the anal area, rather swollen shaped, and there is definately a tag of something white coming out of the anus. Anyone know if they get worms...