I had 2 momo's, One keep bulling the other. And the bullied was not even eating, i bought another 2 more ocell i got that problem solved guess its okey if you have a group of pbass together.
^^^you'll find that true w/ most fish. Its always better to have one or atleast 3. Id say its quite risky to mix those sizes. Get atleast 3-4 if your gonna try it so he cant focus on just one to pick on.