What do you mean? First you ask "What breed is he?" then you say he's a Serama! He isn't a Serama, by the way, unless there is a bearded variety (which I have never heard of). He might be a D'Anvers.
Is that an actual beard or is it a trick of the angle?
Not a D'Anvers, looked them up on Feathersite, they have pea comb/walnut comb(whatever that one is called)... What color are his legs? He could be a mix...