I breed these. She is what I call "In heat" She is wanting to spawn and her stomach is full of eggs to lay. Do you have a male in the tank with her? The male will be twice her size, dark blue with really bright sequens all down his sides and fins, and when he is in his breeding dress he will start to get a crimson color starting from his lower lip down to his stomach and side. They are awesome fish, and amazing parents, they will stand up to any fish and not back down. When you want to breed them, get them a nice flat stone to lay on and she will cover it in eggs. I mean cover, at least 100-200 eggs. For their size they spawn allot.