Sexing my 3 biggest andinoacara stalsbergi - help!

[phineasborg]

Hey there
I'm beginning to think that all 3 largest of my 5 stalsbergis may be male.
They are about 5.5 inches TL.
Let me know what you think:

Alpha - Pics 1 & 2
Fish 2 - Pics 3 & 4 - hoping that maybe, just maybe this could be a female
Fish 3 - Pics 5 & 6

 

[phineasborg]

Third fish:

 

[Reiner]

I think you are right . 3 males IMO

 

[aztsm]

Looks like males to me too.

Here's some old vidz of my pair if it helps.

 

[MrsE88]

Huh, they do all look like males. The second one is tough. I would think by now a female would be laying eggs, so they must all be males.

Do you by chance have a better vent shot of the second fish?

 

[Cichlidfever]

Nice Stalsbergi