I agree with most that is said here, but of course that doesn't mean u HAVE to get rid of them right now. For example as they get bigger start getting rid of firstly the FH, and get a GT, when they get bigger again get rid of the salvini etc... It's really ur choice of what u leave in there and what u get rid of but it's best that u get rid of the most agressive ones first. U could try and keep the GT and JD with the convicts and FM as dithers, a little overstocking usually minimizes the agression, provided u can keep up with the water quality. Anyways just wanted to say that u can go gradually as they outgrow ur tank.