I had 6 1.5" from jeff...4 bloated and died. The I got 2 females and one male 7-8"...and the one female killed the mail. This suxs lol...I'm thinking I want another large male and some more juv. I think these guys are awesome looking.
As far as aggression...guys with the larger ones...you see the teath these guys sport! My female that killed the male also attempted to kill a argenta I had in the same tank. The argenta got past the devider and payed for it. The 2 remaining small ones get along fin by them selves. I think they look different too so I'm hoping I get a m and f out of them. One has more blue specks on the face and black blotches. The other has less blue on the face and more of black bars. I know tue females bar and males don't. But it also might be a less Dom thing too. Time will tell.