Additionally, cichlids from the eastern Anosy Region in far southeastern Madagascar may actually represent two undescribed species, popularly known as Ptychochromis sp.
Ptychochromis inornatus is an endangered species of cichlid endemic to the Ankofia River basin and its tribuaries in the eastern part of the Mahajanga Province in Madagascar.
Ptychochromis insolitus, also known as the Mangarahara cichlid, is a species of cichlid endemic to the Amboaboa and Mangarahara Rivers near Mandritsara in northern Madagascar.
Ptychochromis loisellei is a species of cichlid from the Mahanara River basin north of Sambava in northeastern Madagascar.
Ptychochromis oligacanthus is a species of cichlid endemic in fresh water habitats in the western part of the Antsiranana Province in Madagascar.