ML tree based on CR and ND1 sequences. Tree derived from a ML search using the Tamura-Nei model (TRN+G+I) for the CR and ND1 sequences combined. All analyses (NJ, MP, and ML) gave similar estimates of relationships. For the major clades, bootstrap values (over 50%) are shown for ML (above); MP (with gaps) (below, left) and NJ (below, right). 100*means that all bootstrap values are higher than 95. The tree is rooted with H. hucho, H. taimen and P. perryi.