I have mixed Paratilapia with any number of Paretroplus species.
One caveat
Paretroplus like menerambo can reach 16" and maculatus, almost the size, and get too large for 90 gal
The shot above is from a 150 gal (6ft) tank,
and the ones above needed to be moved to a 400 gal pool (below) after they outgrew the 150 gal