Sexing Bloivian Rams

[ADJAquariums]

What do i look for when sexing Bolivian Rams

Story for those interested-
So yesterday i went to petsmart originally looking for ottos and a new intake tube for my filter, instead i got a Bolivian Ram! normally i wouldnt buy a petsmart fish ecspecially this late in the week after restocking but i saw the Bolivian rams and i thought i have to get one! so i did, i picked one that was being more territorial and looked the healthiest, and i think i picked a good one. I was somewhat thinking the one i got was a female because of how territorial it was as well as its lack of red and blue spots on its underside fins. It is a full grown fish and it is a tanish color with little coloration to it (as in blues and Reds). I am 100% going to get another and i need to get an opposite sex. I would get a picture but my Camera finally went belly up, ill see if good o'l google can produce in this case.