Well if it was the same don't you think it too would be called a green severum lol.
Not always, i have seen sooooo many fish mislabeled, or have multiple names
Pink Con=albino con
dinosaur eel=senegal bichir
so I can easily see green and turqoise as being the same thing
They are the same species. The turquoise are considered a color morph of the greens . They were thought to be a seperate species at one time but thats been disproven . They also don't generally get as large and are much better looking.
Thanks, thats what i thought, just wanted to confirm