first pic looks male, 2nd pic from left to right looks like fem, male and male. 3rd pic looks like 2 males and the last pic the famale is on the bottom...my guess
These are some of the most difficult common cichlids to sex IMO along with Oscars. I have three of them in a 75G with Rainbows and they all control 1/3 section of the tank and fight when they cross the line. If yours aren't fighting well that's a good sign that you 'may' have dif sexes.
Edit: The only reliable way is to vent them. A 'thumb' on the bottom is female. A 'point' on the bottom is male. Can't go by length of fins, dorsal spikes, etc.
looks like a pair to me. from the pics it looks like one of them is dropping its tube. if they are always swimming together then might even be a confirm pair. but time will tell as they settle in more. as the male is much more colorful then the female.
first pic looks male, 2nd pic from left to right looks like fem, male and male. 3rd pic looks like 2 males and the last pic the famale is on the bottom...my guess
There are only two Bolivian rams in the tank. A few of the ones you sexed are not rams.
It does appear the one ram has its tube down. The other looks like it has a sunken belly and either needs to be fed really well or treated for internal parasites. I have a trio of Bolivians and the male is larger and more colorful than the two females. This isn't always the case -- there are really nice quality females out there, too.