3.3.4 Order Pleuronectiformes
Fourteen samples were sequenced belonging to three families, five genera and six species. The overall mean nucleotide base frequencies observed for these sequences were—T: 30.80%, C: 26.70%, A: 24.10% and G: 18.30%. The AT content (54.90%) was higher than the GC content (45.10%). The GC contents at the first, second and third codon positions were 55.50%, 42.10% and 37.60%, respectively. The K2P distances of the COI sequences within species and family were 0.36 and 17.65 respectively.