When they are kept in a large group, the ones that are chasing lose track of which fish they were after, and start chasing someone else. In this way the aggression is spread and no one fish takes too many injuries or gets too exhausted from fleeing. This is true for all mbuna, just more so for Demasoni.
In spite of the 100 gallons, your tank has a smaller footprint than a 75G tank and a little larger than a 55G tank. I'd probably do 4 species, take a look at the cookie cutters for 75G to see why I say that.
So you already have 4 species...maybe just add individuals to your existing groups. If you really want to add fish, Acei might not be too bad since they will use more of the height of your tank than other mbuna.
In spite of the 100 gallons, your tank has a smaller footprint than a 75G tank and a little larger than a 55G tank. I'd probably do 4 species, take a look at the cookie cutters for 75G to see why I say that.
So you already have 4 species...maybe just add individuals to your existing groups. If you really want to add fish, Acei might not be too bad since they will use more of the height of your tank than other mbuna.
