Is my Neon Tetra carrying eggs or is it unhealthy???
 

Hiya!
One of my Neon Tetras has been swimming on its own for most of the day and I have just noticed that its belly is alot bigger than I last checked about an hour ago. Instead of looking plump and sticking out sideways, it seems to be sticking out downwards (if that makes any sense at all).
Could my fish be unhealthy? Or maybe stressed as the tank was only set up just over a week ago and the fish were introduced yesterday.

Help is much appreciated....Thanks :D

im not sure it might be bloated but hopefully its full of eggs...