Otomosho, J. S. “Abnormal Development in the Ovaries of <i>Oreochromis niloticus</i≫ Linn (Perciformes: Cichlidae) in Nigeria”. Revista De Biología Tropical, vol. 35, no. 1, June 1987, pp. 83–85, https://revistas.ucr.ac.cr/index.php/rbt/article/view/24161.