I beleive publican has the black edge and cyanotilapia hara does not as far as I know. I picked up some afra hara at an auction that turned out to be publican and picked up some new ones that are hara. The males are hard to tell apart but the females look pretty different.
Yep, that was it... C. hara does not have the black edged tail or black anal fin,  but M. pulpican does. 
Where this person was probably confused is because Metriaclima pulpican was originally described as Cynotilapia pulpican.
Either way... the white top afra is Cynotilapia sp. 'Hara'  (obviously it may change once formerly described)