I've got a WC(rapps) female around 9" in my 400 with a hell of a lot of fish, she is super aggressive during feeding time, she will take smelt from my pbass that range from 9"-16", also the trimac x festea would be a bad ass fish, but hybrids are lame, IMO!!
Those are just feeders though right? So it doesnt matter...On top of not knowing much about which you speak, you cant even keep fish properly housed.