Need Help Sexing Bolivian Rams (lots of pics)

Can't say with 100% certainty. They all appear to be a month or so away from getting more distinguishable features. Bolivians are more difficult to sex (for me anyway) that blue rams. Though young, the top pictured fish does appear to be get rays on the tail fin, which indicates male. Also, first thing I noticed when looking at the pictures is that the middle and last fish have somewhat sunken bellies. This indicated to me that the top fish was the alpha male (before reading) along with the beginnings of the rays on the tail. The sunken bellies could be the result of the alpha male eating all of the food or causing the others stress. He's a little young to be mating, so you might still have a female in the group. He wouldn't deny a female food if he intended to mate with her. Also, if the other two are males they might not show their rays for some time and they'd adopt a more submissive form such as poor coloration.

Pretty sure the first is a male, second is a female, and the 3rd is a male.

Hard to tell without getting a good look at the vents. My female had extended rays on her tail fins so that is not always a tell tale sign. Venting is the best sure fired way to sex them. Below is a link that has a great sexing guide with very detailed pics. Hope this helps. But regardless of the sexes, that one rams looks extremely skinny. If it were mine I would move it to another tank to make sure it is eating. They have been known to starve to death.....

http://www.brc.moonfruit.com/#/sexingguide/4528902946

Another good sign is to look at the anal fins, if they stop just before the tail = female; if they extend past the beginning of the tail = male. Also, being the dominant fish does not mean it is for sure a male; my female RULED the tank! LOL