So much random mixing these days, I figure if its sold a s a hybrid, it probably is.
Uropthalmus vary greatly from location to location, it would be hard to judge.
The ones I've seen living in straight sea water off Isla de Mujeres were very red, and streamlined, compared to those almost Vieja shaped variants living in cenotes.
I know many have seen this, but is really show the Cenote Azul variant.
Azul imovie edit
or these very Vieja shaped variants from a tiny satellite cenote.

Uropthalmus vary greatly from location to location, it would be hard to judge.
The ones I've seen living in straight sea water off Isla de Mujeres were very red, and streamlined, compared to those almost Vieja shaped variants living in cenotes.
I know many have seen this, but is really show the Cenote Azul variant.
Azul imovie edit
or these very Vieja shaped variants from a tiny satellite cenote.