Male or Female ?

[caacs]

Hello Folks,
I know there isn't any noticeable signs in orcars that could help us to ID its sexes. But, i'd like to know if it is possible to ID oscars' sexes by venting. If it is possible, could someone do this for me please ? Here are the pics of my O's vent.

Best Regards to all.

 

[killerfish]

female ??? not sure

 

[caacs]

I have no idea. I can recognize many other cichlids' vent, but oscars' is where i fail, as long as i've never seen a pair and their vents comparatively.
Describing its behaviour would help identifying the sex ?

 

[CrystalizedHairs]

Female, 99% sure. Males tend to curve back and be thinner.

 

[caacs]

Great!!
It means there is a chance of a solo spawn!!
She used to clean a tile i put to her, but for some reason she stopped. Due to this acts i mistrusted she was SHE. And a strange thing is that she only protects this area during the night when lights are turned on. Every night she keeps showing herself to her friends, plecos .
Thanks for helping.

Best Regards to all.