“Gonadal Maturation the Pleco Butterfly Glyptoperichthys Gibbiceps (Kner, 1854) (Pisces: Loricariidae), from the Guaviare River, Colombia”. Orinoquia, vol. 20, no. 2, July 2016, pp. 15-22, https://doi.org/10.22579/20112629.348.