
Right now I have a young female and a male blue ram in a 20g tank, plus some neons and corydoras. This is about their 2nd week with me, after spending 1 week in a quarantine tank. They were both doing great in QT, zipping around and eating like little pigs. But now the female has become a bit of a recluse and hides in the back top corners of the tank. If she moves, it's to another corner, or behind a rock in the corner. She won't eat any of the flake or pellet food, even if I put it in front of her face. I have not tried the frozen bloodworms yet, but I do believe she ate them last time they were on the menu. Her colors look great though, she is much brighter than the male. I actually thought she was a male at first but the pink stomach gave it away. Her stomach does look a little bit more pink/red than it was when I got her.
To contrast, the male is doing awesome. He swims around fine, is active, and eats anything and everything. He has been chasing the female around a little bit though, could this be why she's sitting up in the corner?
Ammonia and nitrite are 0.
What's going on with her? What should I do?