mark377;4358969; said:Have you ever owned a Midas?
If your tank is big enough you can easily keep them with tankmates. My Midas (and every other Amphilophus I've owned) almost completely ignores smaller fish then him, sometimes they chase them around, but that's it. They just beat the crap out of fish that are almost the same size as them or fish that are bigger.
Now in a 55 or 75 gallon yes you may have a problem keeping a Midas with tankmates, big or small doesn't matter, they just want the space.
So to answer the question of the OP: What size is your tank?
I totally agree...all depends on tank size. In the right size tank you could do midas and firemouth together but it would have to be a very large tank setup correctly.