bonzo
Fish Crazy
Every fish has a different personality and some more aggressive than others. If you keep a close eye on your tank you get to know your fish then you'll know if they're just surviving or thriving. If there's bullying going on you'll know by your fishes behavior. I'm not saying put a 10" oscar in with apistos,but you may find somebody somewhere that does it successfully. As star says get them roughly the same size and let them grow together.
We have quite a variety of fish and the only ones that can't be kept with anything else is our festivums which are not known as an aggressive fish
We have quite a variety of fish and the only ones that can't be kept with anything else is our festivums which are not known as an aggressive fish