The red color is specific per each group , depending on collection point and species.
Sex and age are definite factors for coloration or Red in your wide bars.
I have had 2 types of wide bars, both were blue in base as far as the “wide bar being black/blue” the red spots come in as the mature in the Venezuelan group. Other wide bars get solid red in there flanks it all depends on the group.
regardless of where, given the fish is loved, and well fed with high quality