Marbled Fenestratus originated in Australia I cant post the link being I'm new but all the OG ones look like yours posted.
I already posted the link, in post #16.
https://www.monsterfishkeepers.com/forums/threads/marbled-fenestratus-breeding-project.466053/
From that …..
Impossible to know with any certainty as the original breeder spawned the first marble from a pair of fenestratus that he purchased from a LFS in AU. How "pure" those 2 fish were is anyone’s guess.
You can read more about these fish, and the breeder, in the following discussion. http://www.cichlidae.com/forum/viewtopic.php?p=36385
The breeder chimes in on page 2, last comment.