Maybe
Certainly beyond my competence to tell those three types apart. From Seriously Fish:
Laetacara dorsigera is distinguished from L. araguaiae and L. curviceps by having higher head depth (head depth 90.2–96.3 % mm HL in L. dorsigera vs. 84.6–88.9 % mm HL in L. curviceps and 80.0–87.1 % mm HL in L. araguaiae), from L. thayeri by having cycloid scales on the sides of the head (vs. ctenoid scales) and more anal-fin rays (8–9 vs. 7–8), from L. flavilabris by possessing fewer total vertebrae (24 vs. 26) and fewer scales in the upper lateral line (14–15 vs. 15–18), from L. fulvipinnis by having fewer scales in the upper lateral line (14–15 vs. 15–17), fewer scales on the lower lateral line (6–8 vs. 8–9) and absence of a dark dot at the edge of each scale on the midlateral portion of the flank (vs. presence), from L. curviceps by having a wide ectopterygoid (vs. a narrow ectopterygoid), more dorsal-fin rays (9–10 vs. 8–9) and breeding males and females with conspicuous red cheeks, opercula and belly (vs.no such colour pattern), and from L. flamannellus by absence (vs. presence) of an orange-coloured ring around the dorsal-fin spot.
http://www.seriouslyfish.com/species/laetacara-dorsigera/