Here are a couple of my Ambanja babies. if the pics are not clear enough I can take some more. These are both about 4 months old. I am guessing the first is female and the second is male. But I am probable wrong on both What do you think??
First one is definitely female. You can see the dip near the vent.
Second one I would also say female. If it's 4 months and was a male, it would be showing a ton of color. Unless it's a runt. My 10-12 week old ambilobes have blue bars and already green/yellow background showing.