Comparative Assessment of Heavy Metals in Orechromis NiloticusTilipia (From the Michael Okpara University of Agriculture Umudike Fresh Water Fish Pond in Abia State with Those Frmom Uzere Fresh Water Pond in Delta State of Nigeria

T.A. Abii, O.E. Afieroho and F.U. Nnamdi

Journal of Fisheries International 2 ( 3 ): 226 - 230 , 2007