I got 7 Harlequin Rasboras last night. I have been watching them and they are constantly chasing down and biting my Lamb Chop Rasboras. I have 7 Harlequins and 4 Lamb Chops as that's all they had at the store. They are also picking at each other as well. Is this normal and will they stop eventually or? Also my male DG is just constantly chasing his reflection now. It started a bit 3 days ago, but I didn't think anything of it, but now he just cruses along the back and one side of the tank over and over and it appears he is chasing his reflection. Is it because he is stressed? I tested my water and everything is perfect.