The true Midas, is Amphilophus citrinellus.
But these days, the term Midas seems to be a catchall generic term for any of the gold (yellow, pink) morph Amphilophines from the great lakes region of Nicaragua. About 8-10% of all Amphilophines of the lakes have the ability to be this color morph.
There are at least a dozen Amphilophine species that exhibit the golden/orange morph.
Add to that....aquarium strain hybrid "midlevels" that have been around for decades, and are almost indistinguishable.
So as Deadeye said, its almost impossible to know (especially in a few photos) one from another, unless the seller got them from a reputable source, that knew what lake they came from.
If from a LFS you can almost be assured they are midlevels.
When young they all look like thsis.
and change color as they mature, but their colors are usually set by about 5"-6" .