Brief Study on the Genetic Variations at Isozyme Loci in Native Catfish (Clarias batrachus), African Catfish (Clarias gariepinus) and their Hybrid (Clarias gariepinus x Clarias batrachus). Bangladesh J. Sci. Ind. Res. 2010;44(4):381-386. doi:10.3329/bjsir.v44i4.4586