Pregnant Danio Or Dropsy

[stivhixon]

Ive been watching my danios and one has a huge belly, I mean huge. The one male (i assumed) has been following her around. today I came home and she is on the gravel behind a rock, still breathing very heavy but does not look good. nobody is messing around with her but she looks like a blowfish, should I remove her? or is she pregnant? I looked up info on the internet and learned that someone thought that their fish was pregnant and it ended up being a disease called dropsy, can anyone help me?

 

[WILDER]

Being blown up can mean a number of things, if she resting on the gravel not good.
What does it look like when she goes to the toilet.
What do you feed the fish.
Is she laboured breathing as well.