Neighbor joining (NJ) tree developed using K2P distance among 101 CO1 sequences.

<p>Notable anomalies in clustering are shown by 4 species {<i>Mystus horai</i> (accession number FJ170791), <i>Bagarius yarrelli</i> (accession number DQ508069), <i>Clarius batrachus</i> (accession number HQ654701) and <i>Amblyceps apangi</i> (accession number EU490873). Deep conspecific divergences are shown by 3 species (<i>Glyptothorax trilineatus, Glyptothorax telchitta</i> and <i>Erethistes pusillus</i>). · The numbers at the nodes are bootstrap values based on 1000 replications. · Specimen GenBank accession number and species name are shown for each taxon. · Red and black dots correspond to the sequences acquired from database. Red dot alone corresponds to the cases of abnormal clustering and deep conspecific divergence.