What sex are my Jacksons?

[MeruJack]

I have a dozen 3 month old jacksonii jacksonii babies and I am trying to figure out how many are males and how many are females. While some of the ones I think of as male have more blue and yellow coloring and the females appear to have less bright coloring &/or brown patterning, I don't think their coloring is a reliable indicator as it is always changing. And, unlike the other two subspecies of Jacksons, both males and females have three horns...I think some species like panthers you can tell early on (before they show their adult colors) by looking at the base of the tail...so I tried that. Here's what I came up with....Do you agree? What tips can you give me to make my guesses more accurate and efficient? Thanks!

#1 #1 #1 upside down MALE? #2 #2

#2 FEMALE? #3 Upset colors #3 #3 upside down FEMALE?

 

[MeruJack]

Here are two more babies:

#4 #4 #4 MALE?

#5 #5 Getting upset/Changing to brown #5
#5 Changed to black FEMALE? with extra skin fold above vent

Well, do you think I got them right? If not, please share tips &/or pointers. Thanks!

 

[JGuinan007]

They are all male except #3 maybe ok i'm not sure now ok just wait til they get older