Oreochromis placidus

The black tilapia can grow to the recorded maximum length of 35.5 cm (14 inches).^[3] The fish is silvery to steel-grey, with white abdomen. There is a red or orange margin on the dorsal and grey or black marblings on the gill-cover.^[4] The species are only reported to be found in fresh water at low altitudes and latitudes which suggests its relatively low salinity and temperature tolerances.^[5]

The species are mainly found in the lower Zambezi river and other rivers southwards such as Runde, Pungwe, Rovuma and Buzi river.^[6] It is also found in the lakes nearby.^[7]