Sorry for the crappy pics, hard to get a good side shot when the subject thinks you're going to feed it!
However, I still tend to think they are JD's. They all came from the same clutch, and they all USED to be the same color and the same size when we got them. Here's another pic from the side, today they aren't so dark...
Meanwhile here are some pictures of juvenile convicts: http://en.microcosmaquariumexplorer....onvict_Cichlid
I'm no cichlid expert but I think that convicts should have stronger striping than these guys do. To me, in the above picture, the fish on the right just looks like a darker, smaller version of the fish on the left...