Scalie

A scalie is like a furry whose "fursona" is a reptile or amphibian.

Source: tatoeba (9710078)

I'm a scalie, not a furry.

Source: tatoeba (9741951)

If someone is called a furry when their persona is an animal, and a scalie when it's a dragon, what are they called when it's an alien?

Source: tatoeba (10515823)

While we were there a couple of scalies came out and started up the street, but seeing the strikers there they turned around and went back into the saloon.

Source: wiktionary