• [Wiki] http://en.wikipedia.org/wiki/wiki/Chrysichthys.
• [fishbase] https://www.fishbase.se/summary/Chrysichthys-nigrodigitatus.html.
• [EkpoUdoh2013] Ekpo, I. E. and Udoh, J. P. (2013). Age and growth of Chrysichthys auratus in the Lower Cross River, Southeast Nigeria. International Journal of Ecosystem, 3(4):64--71. doi:10.5923/j.ije.20130304.02.
• [IkonOgbe2015] Ikongbeh, O., Ogbe, F., Solomon, S., and Ataguba, G. (2015). Age, growth and mortality of Chrysichthyes nigrodigitatus (lacépède, 1803) from Lake Akata, Benue State, Nigeria. Asian Journal of Conservation Biology, 4(1):81--88.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [Nawa1985] Nawa, I. (1985). A study on the growth of Pseudotolithus elongatus, Chrysichthys nigrodigitatus and Cynoglossus goreensis occurring in the Cross River Estuary. Aquadocs.