However, we have started getting a bit worried about our female GBR. Since we came back from our 2 week holiday a few days ago, she has looked very pale compared to the male and seems to spend a lot of time alone in one corner rather than with the male like before. When he follows her she swims away; he doesn't charge at her but follows her on a regular basis. I have seen her eat, however the male seems to have grown a lot bigger than her. She spawned before we left, but the eggs disappeared. Her belly is very red again like it was the last time she spawned, however last time she didn't go pale and didn't behave like this.
Any ideas what the problem could be?
Thank you so much!