Here is some info I just pulled of the net.
Ram cichlids become relatively easy to sex as they reach early adulthood, which for such a little cichlid, doesn’t take long. Almost all of the commercially available rams I’ve seen over the years, both farmed and wild-caught, have been of sexable age and size. There are a number of traits to use, and we’ll get to the secondary ones in a moment, but the easiest way to sex rams is by looking at the black mid-lateral blotch. In males, there are none of the bright blue spangles inside the blotch, whereas in females, there is. You may have to spend a little time looking at the rams in your dealer’s tank to see the difference, given angles of light and all that, but it is the absolute surest method of assigning gender to a few intended for your aquarium.
A number of secondary traits can also separate the boys from the girls, depending on the maturity of the rams in question. In males, the second and third dorsal spines have extended filaments, as does the first spine on both ventral fins. In general, mature males are larger and longer-bodied than mature females. Females, on the other hand, do not have the extended dorsal and ventral filaments; have a shorter, more stocky body compared to that of males and often a sport a reddish-purple abdomen when in good condition.
Its kinda hard to tell which male or female form the pics since they are far away and it is hard to see their features. But from what I know they kind of look both like females? They have a more rounded tail, and do not have a really pointed dorsal fin. But it is hard to tell since you can't see them close up.
Someone with a little more experience might be able to help you out more than me on the sexing part.
-FHM
