his are definitely not pachyhynobious-the 'guy' is erik keyster and he knows his stuff (like ed he's a zoo guy). there are some dealers right now calling the golden/brown pachys 'pachyhynobious'-and what they have is an unknown sp of pachytrition, but not the big head variety that he has listed in his first ad. pachyhynobious are very hard to get and the only time i knew of them for sale they were 150$ each, they are reportedly hard to keep also.