Before I say anything else, beautiful finnage!
I really think he's a PK male though. I know the ventrical and anal fins are a little short, but I think I saw something of a beard on him in that video and not just gill plates, but it's a little hard to tell. But the level of aggression alone is unreal for a female. I know it's a bit of a stretch but your fish might just be somewhat androgynous, meaning that it's not clearly male or female in terms of it's behavior, but not it's physical type. I think a way to test this might be to try and condition him/her with a male in the same tank. Put him/her in a chimney and see if (s)he become egg bearing and/or produces breeding bars. If she does, then she's a female, if not then he's most likely male.