I think it's worth trying as long as you keep a close watch on them and get it out at the first sign of trouble. We all risk the lives of our little friends every time we add another fish, ie: disease, parasites, agression. I hope you have another setup just in case something goes wrong. I have a sabre tooth tetra in with angels, electric blues, as well as other non-agressive fish and they all seem to get along fine and I have not had a problem in years, you will have a better chance of them all getting along fine if you start small and they all grow up together though.