Maximum-likelihood tree constructed for COI barcode sequences of grunt species obtained in the presently reported study (Bangladesh) and for conspecifics reported in GenBank. The GenBank accession numbers and country of origin are given within parenthesis beside species name. Numbers on nodes represent support values for Maximum-Likelihood (bootstrap). Bootstrap support of >70% are shown above branches. Scale bar indicates number of nucleotide substitutions per site. Sequences of Lethrinus nebulosus and Gymnocranius griseus were used as outgroups.