Help me if you can. I have just started an aquarium, and went to my local stockist to get my first batch of fish. I explained that I was new to keeping fish and he sold me a male and female betta!!! They were actually living in relative harmony for the last few days but now he has started to chase her round like mad. As it is a Sunday I will not be able to remove her till tomorrow, am I best to take her back and keep the male.. or get another female? I want to stock my tank and it seems that she has ben a bit more aggressive with other fish so far than the male. How do I take her out of the tank and take her back..?? so many questions just hope she stays hidden till tomorrow.