N.F. Olele, O.F. Nwachi and O.F. Oshemughenm
Journal of Fisheries and Aquatic Science 8 ( 1 ): 59 - 65 , 2013
G.S. Adaka, I.N. Etim, A.A. Nlewadim, N.F. Olele and C.F. Ezefulukwe
Journal of Fisheries and Aquatic Science 10 ( 6 ): 587 - 591 , 2015