B.  Gratwicke and Marshall, B. E., ?The relationship between the exotic predators Micropterus salmoides and Serranochromis robustus and native stream fishes in Zimbabwe?, vol. 58, pp. 68 - 75, 2001.

B.  Gratwicke, Marshall, B. E., and Nhiwatiwa, T., ?The distribution and relative abundance of stream fishes in the upper Manyame River, Zimbabwe, in relation to land use, pollution and exotic predators?, vol. 28, pp. 25 - 34, 2003.

W. T.  Kadye and Marshall, B. E., ?Habitat diversity and fish assemblages in an African river basin (Nyagui River, Zimbabwe)?, vol. 45, pp. 374 - 381, 2007.