WOW, Tylene! He looks flawless!!! The rostral horn growing upward at this age isn't all that uncommon in deremensis, in my experience with juvenile wild-caughts. As adults, they rarely have perfectly straight horns, and as you said, it's really what makes this species so interesting. The biggest challenge with imports, much like melleri and merumontanus, is that their horns are quite delicate and often break or bend during shipping, so the fact that we were able to arrange for Duke's placement just in time (and the fact that he's captive-hatched) should make him develop some nice, full (though maybe a bit bent), horns.
Thanks for the update, Tylene! It's always great to see them.
Cheers,
Fabián
P.S. I can't get enough of their eyes-- so elephant-like. Good job!