Sex Please

[troublesum]

I have this group of 8 since May, got them at 1in. they range in size from 3in to 5.5in 2 i moved to a 40 gallon they were only 1.5-2in. from the 40 i had 5 3in Red Jewels in moved in with the terrors they killed 3 within 30 minutes.
I have had a tough time with these guys but anyways can i get help with sex i have my (Thoughts, Guesses,) these is only room light i cant turn on the light on the tank they freak out

Thanks in advance

 

[duanes]

Females have a black area in the dorsal, males don''t. Males have a number of iridescent spots in both the dorsal and anal fins.
The slope of their forehead, is less steep
.
All the above are females.
Below are males

Males are usually much larger

 

[troublesum]

Thank you Duanes. I've done a lot of research but this bunch is tricky as i believe 1 & 2 are female but they are Dom that's basically all i was asking

 

[duanes]

By the way, here's what I mean by spots around the dorsal and anal fins