Nice pickup! i cant wait for my new baby to get this big, and that woman must have been doing huge daily waterchanges for him to not be stunted in that tank thats crazy but at least you have him in nice big tank now

and as for sexing, no one knows, there is speculation that you can sort of tell by the shape of their head, one has longer nose portion while other is more blunt though have no idea which is which and its not 100% sure breeding on these guys has really only happened by accident here in the states though there is rumor that somehwere in asia they are being commercially bred