Help is my tiger barb pregnant or ???

[EPiersall]

Please help one of my tiger barbs looks like this.

 

[V227]

I've had female Tiger Barbs temporarily blimp out in a similar manner before. IMO, the problem is likely constipation, but a genetic predisposition towards obesity or being egg laden are also viable possibilities. There apparently is no prolapsed vent or anus, which is a good thing.