Here is one of them, other one wouldn't stay still to take a picture.
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How can you tell? So I know for future referance
How can you tell? So I know for future referance
The shape of the anal fin (more rounded, not pointed), the lack of extended rays on the tail fin (compare it to the male in your avatar, males have long flowing red rays, female can have them, but they are generally shorter), the shape of the head (more rounded) and the 3rd/4th (black) spines on the dorsal fin are not massively extended like a males.