Do you have a breeding pair? I don' t know much. I've had one breeding pair in the past. The two of them were the only fish in a 55 gallon. I fed them their regular food and every couple of days chopped up earthworms to get them healthy to breed. They become very territorial when breeding. Mine preferred privacy and always laid their eggs over the weekend (the tank was at the office) when no one was around. If something disturbs them a lot, they will sometimes eat their eggs. Some pairs are just bad parents and always eat the eggs. Really, if you keep your tank very healthy, water quality high, good diet, and two fish in love. You might look into what kind of water is best as far as hardness etc (I don't know) the other thing to think about is all the work it will take to raise the fry, and where you are going to sell them. It's a lot of work. Do your research beforehand.