Paratilapia polleni is a medium sized cichlid fish from Madagascar. It was first described by the Dutch ichthyologist Pieter Bleeker in 1868. In 1882, a second species, P. bleekeri, was described, but it is now known to be a junior synonym of P. polleni. It use to be that one has big spots, the other has small spots. However, currently there is no bleekeri, it has been declared a synonym to polleni, which is the older name. What they are currently going by is population names, all of which are tentatively assigned to Paratilapia polleni for now. There will probably be revisions and new names, but I don't believe the name bleekeri will be resurrected.