M or F wild cacatuoides?

[mantisfan101]

(The one in the center)

I picked these up at petco and they were labelled as assorted cockatoo cichlid. Turns out they’re probably A. Cacauoides wild form and I’ve determined that there’s a male and female but the third stumps me. It looked like a male at first but now it looks more like a male; it’s black ventrals seemed to have disappeared.

 

[mantisfan101]

If it helps they’re all around 0.85-1”; all are just 1/4” - 1/8” under an inch

 

[Mike Wise]

At that size it is hard to separate females from immature males. All you can do is wait until they are fully mature.