• [Wiki] http://en.wikipedia.org/wiki/wiki/Gymnocharacinus_bergii.
• [fishbase] http://www.fishbase.se/summary/Gymnocharacinus-bergii.html.
• [CussOrtu2002] Cussac, V. and Ortubay, S. (2002). Gametogenesis and development of Gymnocharacinus bergi (Pisces, Characidae): reproductive mode relative to environmental stability. Environmental Biology of Fishes, 63:289–297.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.