Calibrated phylogenetic tree. Molecular clock tree reconstructed by BEAST analysis. The tree was calibrated by the secondary calibration of 8.32 (5.92 – 10.75) Mya for the genus Nothobranchius. Time axis shows the age in mya. The table embedded within the image reports the age estimates of individual nodes in the molecular-clock tree, where vicariance or dispersal occured. Results from the analysis in BEAST software using one individual per species.