Phylogenetic Bayesian tree of the β hemoglobins from different teleost fish. The statistical support for internal nodes was determined by posterior probabilities (Bayesian inference) and bootstrap analyses (Maximum Likelihood and Neighbor-Joining analyses) and is shown, in this order, at the corresponding branches. Values ≤ 50% are indicated by (-). The tree resulting from ML and NJ analysis gave similar topology. The nomenclature of the Hb groups in from Maruyama et al .