A reference to the karyotypes of Channaspecies indicates that species with large number of chromosomes have acrocentric centromere. For example, the 2n of C. marulioides is 38 of which are 10 metacentric chromosomes while the 2n of C. marulius is 44 of which are four metacentric chromosomes. This observation supports the hypothesis of origin of bi arm chromosome from telocentric counterparts in Channa species.