I only have one knife which is the clown the black ghost isn't mine but I'm probably going to get rid of the clown he keeps nipping at my other fishes fins but here is my plan for both the 90 gallon tank and for the tank I'm going to build which is going to be at least 300, the 90 gallon will house 2 bichers and at least 5 African cichlids do you think I could get another bicher and/or more African cichlids than that? And the 300+ will have a silver aro 2 pbass and 2 motoro rays do you think I could throw in the oscars too if not ill get rid of them and do you think I could get a black aro as well for the 300+ I hope this makes sense sorry for getting defensive earlier just really like my fish and after thinking about it I am a little overstocked just want my fish to be happy