Estimates of Pairwise Genetic Distances between Catfish Species under Kimura 2-Parameter Model [18].

Pairwise congeneric divergence was denoted by number of base substitutions per site between species (below diagonal) with their corresponding standard error (above diagonal). Complete deletion of all codon position (1st, 2nd, 3rd and noncoding) was employed in this analysis.*Genetic distance resulting from intraspecific variation between channel catfish (I. punctatus) and Ictalurid hybrid catfish (I. punctatus x I. furcatus).