López Fuentes, Paola, et al. “First Record of the Non-Native Fish Poecilia Reticulata (Cyprinodontiformes: Poeciliidae), in Chiapas, Southern Mexico”. UNED Research Journal, vol. 13, no. 1, Apr. 2021, p. e3266, doi:10.22458/urj.v13i1.3266.