I'm currently working on a 90g Mbuna tank. So far I've got two fully grown Maingano? males. One 2.5" male Yellow Lab. One male YT Acei about the same size as the Yellow Lab. I will not be getting anymore Maingano, and I might lose the smaller one, the larger Maingano is the dominate fish in the tank. I plan on getting more Yellow Labs, YT Acei, and Rusties. Possibly some Red Zebras, but I'm not sure if their compatible. Would any of the fish interbreed? I'd rather not stock anything that could hybridize.