Lindsey - I've got 3 lamarcks. The largest one and the smallest one are females. I had them together for quite a while hoping the larger would turn into a male. I finally saw a male on DD one night and snagged it up (never ever seen a male for sale). When it came in, you could tell it was young (the yellow spot on the head was very faint) and it was smaller then my largest female. That was a big uh-oh. So the male has started to revert to a female. I *think* the female is turning male. I can see something going on with her forehead where the yellow spot for a male will be. I'll just have to wait this odd sexual discovery out.
Also, I saw my trio of flames *spawning* (well, doing the dance) last night. Freakin amazing. The male harasses the two females and then they circle up to the top of the water column. I'll try to get some video of this posted soon.
Thanks for all of the great feedback.