Is Gekko Moriah human? Obviously, Gekko Moriah is pretty funky looking.  I understand that his horns and wings are articles of clothing but his size, neck, and leek-like appearance are strange.  In a forum discussing fan theories concerning the nature of "minkmen" someone wrote that Oda confirmed Moriah to be a human (as opposed to fishman or snakeneck) and therefore "anything is possible".  I've been unable to find his source.

I am not asking if Moriah is a snakeneck or minkmen as I believe they have not yet been shown/identified by official sources.  What I am asking is: are there any official sources that identify whether Moriah is human?
This is all we know about him being a human :-


  Moriah is a gargantuan person with very distinct devil-like features.
  Standing at 22' 7'' in height, he is the tallest among the
  Shichibukai. His animal theme is that of a gecko based off his name,
  general appearance and the collar of his shirt bearing a resemblance
  to a lizard's frilled neck. His overall design resembles a giant leek


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