Sexing M. estherae

[Snuff]

Hopefully someone can confirm my thinking. I am pretty sure I have a male and a female M. estherae. Here is the one I think is male, sorry its a little blurry but he moves too much.

And here is what I think is a female.

I have these two, and I just brought another one home (still floating) that looks just like the second pic. Any opinions are appreciated.