No, I just mean that both Narven are the exact same species. But they are different in the sense that how Asians look different from Africans and such. There can be a child which has some desert Narven features and some swamp Narven features. And btw, I'll make Swamp Narven be pretty agile as well, maybe not specifically in running but quick movements will be a thing with them. Have you ever seen a crocodile snap at it's prey at lighting speed? They are fast.

And does anyone have a better title for this?