The Placidochromis ordinarius lives in the benthopelagic, freshwater, depth range 53 - 122 m environment.
Placidochromis ordinarius, Placidochromis orthognathus, Placidochromis pallidus, Placidochromis phenochilus, Placidochromis platyrhynchos, Placidochromis polli, Placidochromis rotundifrons, Placidochromis "silver blotch", Placidochromis stonemani, Placidochromis subocularis, Placidochromis trewavasae, Placidochromis turneri, Placidochromis vulgaris, Platygnathochromis melanonotus, Protomelas annectens Protomelas dejunctus, Protomelas More