So how do you tell the difference?

Something with this close of a depiction you would definitely think that some people would breed these with the purpose to sell them as Cornuta.. I love this frog, but that would kind of suck buying a Green Cornuta only to find out later it's a fantasy frog. I don't think this would bother the average person, because the frog is beautiful, but if you were going to try and breed these (as Cornuta) then things might become a little frustrating.

This makes me think of that thread Namio made questioning the breeding problems with F2 Cornuta. Maybe it's because a lot of them aren't Cornuta and they're actually hybrids? Ehh.. Regardless, beautiful frog mike. I would have bought it if I saw it.