ogrim, when i first started the breeding project, i read that post and thus went on aquariums to check out the stocks

I can tell you they are indeed correct however, it's not noticeable unless you have a trained eyes.
what is noticeable for me, POT Belly under their chin. males don't have it.
one other thing, males face reminds me of the Alien face (from the movie), while female is definitely cuter/smiling puppy.
However when I first started I couldn't tell the diff.
I'll take proper photoes of my males/females and post it soon (as soon as I can be bothered! lol).
PS. also since i have the gold ghost knife (faded/transparent brown colour), it's much easier to see the facial structures. black ones are harder to see the facial differences.