• [Wiki] http://en.wikipedia.org/wiki/Papyrocranus_afer.
• [fishbase] https://fishbase.mnhn.fr/summary/Papyrocranus-afer.html.
• [Femi2022] Femi, O. (2022). Age and growth of Papyrocranus afer (Gunther 1868), an emerging ornamental fish in Nigeria. Uttar Pradesh Journal of Zoology, 43(2):19--29.
• [FemiUgwu2019] Femi, O. V. and Ugwumba, A. A. (2019). Reproductive parameters of reticulate knife fish, Papyrocranus afer (Gunther, 1868) from Lekki Lagoon, Lagos Nigeria. Global Journal of Fisheries and Aquaculture, 7(2):506--515.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.