• [Wiki] https://en.wikipedia.org/wiki/Etheostoma_cragini.
• [fishbase] https://www.fishbase.se/summary/Percina-tanasi.
• [Kooy2010] Kooijman, S. (2010). Dynamic Energy Budget theory for metabolic organisation. Cambridge Univ. Press, Cambridge.
• [Star1977] Starnes, W. C. (1977). The Ecology and Life History of the Endangered Snail Darter, Percina (Imostoma) tanasi Etnier. PhD thesis, University of Tennessee, Knoxville.