The one in the 2nd and 3rd pic is definitely a Parachromis loisellei.
There are 3 species that look pretty similar:
Parachromis loisellei
Parachromis motaguense
Parachromis friedrichsthalii
To make it even more confusing, the motaguense comes in two color variants: the red tiger and the normal yellow. The red tiger mota turn into a gorgeous orangish color, and are pretty easy to spot.