S. O. OLUFEAGBA, S. E. ALADELE, V. T. OKOMODA, A. OKERE, O. T. ODUOYE, and T. HASSAN, “MORPHOLOGICAL VARIATIONS OF CULTURED AND WILD Oreochromis niloticus FROM IBADAN AND KAINJI IN NIGERIAB”, NJF, vol. 12, no. 1, pp. 828–836, Jun. 2015.