Can someone help?

[Andyg23]

I have 2 convicts and was wondering if anyone could tell me what sex they are.

 

[Tuckerp]

If I had to guess I'd say the 1st pic is a male and the 2nd is female. A good pic showing the fins would make it easier to tell. Do either of them show colour on their belly?

 

[Aski247]

Looks to be two males to me, a better side profile shot of them would make it easier to tell for sure.