Got my first agasizzii, how do I sex them?

[ReefDemon]

So I got my first pair of apistos a few days ago. They’re I’m my community tank until I set up their biotope. They’re eating well and don’t seem shy at all even though they’re quite small and are in a tank with a couple of Bolivian rams and a pair of German blue rams and tetras.
how do I sex them to know if I really have been sold a pair of apistogramma agasizzii double red? I’ve read about sneaker males, so don’t really trust my own opinion on having a male and female.
I've attached a few pictures so hopefully you guys can help.

P.s. excuse the hair algae, I’m fighting a losing battle here.

male

Female

 

[Mike Wise]

A. agassizii is easy to sex when mature. Males have a spade-shaped caudal, females a round caudal. Of the 3 photos the first 2 appear to be that of a female. The third I cannot make a guess. In addition, it shows strange abdominal stripes that are uncharacteristic of A. agassizii.

 

[Hellfishguy]

Looks like 2 females to me, but time will tell.

 

[sah_in]

1 and 3 famale 2 male