The bigger of the 3 died yesterday. I tried to save it by relocating it and it didn't take to its new place so I brought it back, but it just didn't work out.
At first it would go and give the queen trigger some grief, but eventually over a month or so the queen out grew it by an inch +, yep pretty quick, and then the queen would charge the blue line. After 2 days worth of what seemed mild, and the blue line still eating, I made the move. Perhaps not fast enough, but I didn't sit back either, most things resolve in a day or 2 if it wasn't an immediate problem with the fish's introduction.
Either way, it's dead and was 5.25", the queen is at least 6.5"+ then. Still have the smaller 2 going strong.