Worried about Goldilocks

[Morrison]

Yeah, I'm sorry. It's going to be another floating related thread and I usually know how to handle with it.

Goldilocks (my adult female golden albino) has always been pretty round.

(Sorry for the HUGE and blurry picture, made with my cell phone)

I always thought she looked graved, maybe she is, I don't know. But I noticed her floating a lot in the last 2 weeks. The Amount of Floatiness varies each day. Right now she's floaty again. Burping up air bubbles all the time, sinking to the bottom. And I'm sure she's floating again in a few hours.

Edit: Oh and when she floats to the surface, she also gulps for air sometimes. Ending up floating even more.

When I got home 2 days ago her belly was huge. I thought "oh no, she's bloated". But her legs aren't really swollen. There was a huge air bubble coming out of her mouth and she was normal again.
But I don't know why it's happening constantly lately. She's eating enough, the other axies are fine (as long as a plant eating Xotl is referred as 'fine').

What can it be? Water parameters are normal (for a pretty long time, that's good I guess), she's eating and the temp. is fine (it's pretty cold over here).

 

[Alkylhalide]

I probably wont be helpful but do you have aeration in their tank?

 

[Morrison]

Not really. Just a load of plants, but I'll try an air bubble thing.

 

[Alkylhalide]

Not really. Just a load of plants, but I'll try an air bubble thing.

Yes try an airstone she may be going to the surface for air because there isnt enough oxygen in the water. When some use their lungs they arent always the smartest, and cant exhale the breath for a while.
As for the bloating that may be because she is gravid?