3 weeks ago, I noticed my plump female guppy had a very dark gravid spot. She was kept in a community tank with ~10 males and a bunch more females. I figured she is pregnant so I moved her to a different tank for breeding. She's also eating a lot. Her gravid spot recently starts to develop some orange-ish color. However, her belly is not getting any bigger. If anything, she is even a bit skinnier now than before I moved her. But she is still very active and healthy. I'm starting to wonder whether she is pregnant.