D.O. Bekibele, E.J. Ansa, O.E. Agokei, J.Y. Opara, V.C. Alozie-Chidi, A.A. Aranyo, P.U. Uzukwu, A.J. Gbulubo, A. Okereke, N. Azubuike, N. Ezenwa and I. Ibemere
Journal of Fisheries and Aquatic Science 8 ( 1 ): 184 - 189 , 2013