I think they are 3-4 months old (they're about 3.5 inches body length).   They've definitely grown since I got them, and have little tummies now, too.  Here are some photos I took yesterday while they were eating a bloodworm snack.  They now get their main dinner (Repashy freshwater meat pie) from my fingers (which is pretty cool), then munch on bloodworm snacks for a bit.  They're very active, and always hunting, but with those bellies I don't believe they're starving.  They've been swimming a lot lately, too.  Abe Sapien is the leucistic, Nessie Goldenhair is the golden albino.  Nessie is developing a lot of those iridescent spots lately, and in certain lights they really flash.