well, they are not in the genus Cyphotilapia... frontosa is the only one in the genus. I don't know if the others have any distant relationship to frontosa or not. Also, their specific epithet is not frontosa, which is prolly the most damning evidence of all that they are not in fact frontosa.
. he just sold his 250 gal acrylic we built because it was 2 big. (like any fish tank can be to big. lol) even though my wife thinks anything over 90gal is to big