The genetic diversity of five natural populations milkfish (Chanos chanos) collected in Nghe An, Quang Binh, Binh Dinh, Phu Yen, Khanh Hoa provinces Vietnam was examined using COI gene sequence analysis. Twelve haplotypes were noted from a total 50 sequences along with 12 variable sites and 6 parsimony informative sites. population had the highest haplotype (0.889 ± 0.060) nucleotide diversitie...