im gonna say gold saum becuase, at 6cm you cannot tell by the orange on its dorsal because its to small i see them all the time in my lfs and im sure its a Gs
10000000% Blue Acara for many many reasons in which I don't feel like typing. The whole body shape is off to be any sort of Gold Saum. Fin markings and the orange depth into the fins as well as the speckaling on the face. There are tons of ways to tell BA from GS.