Ramírez Espitia, E. J., Hurtado Giraldo, H., & Gómez Ramírez, E. (2020). Gross anatomy, histology and morphometry of the digestive tract in the fish Pterophyllum scalare (Perciformes: Cichlidae). Revista De Biología Tropical, 68(4), 1371–1383. https://doi.org/10.15517/rbt.v68i4.40393