Clownfish with bump on anus

[Sockcman]

A couple of days ago I noticed one of my clownfish had a bump where his anus is. Its hard to get a good picture of it but hopefully that helps.

Any idea what this is and if there's anything I can do to help?

Thank you!

 

[Sockcman]

Maybe a better picture

 

[Fish Fan]

Maybe a better picture

Is that a bump, or perhaps a piece of feces? In this last pic, that looks like feces to me, which is often just their diet, but if 'striggy' the could be a sign of internal parasites.

The fish looks quite robust to me otherwise. Do you notice anything else "off" with the behavior or appearance of this fish?

 

[vetteguy53081]

Maybe a better picture

This looks to be intestinal blockage or even constipation. Dont feed for 12-24 hours and see if bump subsides. In addition.... if blockage, feeding brine shrimp will help object pass through