Phylogenetic tree constructed from the barcoding region of COI using Bayesian inference (BI) with BEAST 1.8.0 (Drummond et al. 2012). Branches carry posterior probabilities and bootstrap supports (BS) from the tree constructed with the Maximum-Likelihood (ML) method (PhyML; Guindon et al. 2010). The tree is shaded according to the value of posterior probabilities: the lighter the shade the weaker its support. Only posterior probabilities above 0.9 are shown. A lack of bootstraps originating from the difference between the BI and ML trees is denoted with −. Genetic lineages are presented in the diagram in the upper left corner. The genetic lineages, which are valid species, are written in black and the lineages, for which the species name is available but not valid, are in grey. For the genetic lineages, which were collected at a single sampling site, their locality is given. The outgroup consist of Rhynchocypris lagowskii (AP009147), Tribolodon hakonensis (AB626855) and Oreoleuciscus potanini (AB626851).