Super red with yellow cheek are from Terengganu state, Malaysia. 2nd grade super red from north of Perak state. These 2 places only worthy of reds. Other places not so much, they can be from pinkish to greyish color.
Yours need to be sourced out, if they were from Malaysia with that color, they can either be farm Pahang state juveniles or empurau mahseer from borneo.
I could suggest placed them mahseers in the koi pond so they can get enough sunlight & the pond are dark enough to bring out their colors. Perhaps.
I saw 1 of your sinensis have that symmetrically wide body which I adore in mahseers. Does it show when you first got it? Or the shape changes as it grow. I'm searching for the same body shape, looks solid.