1. Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic; e-mail: , fish.jakub.zak@gmail.com, blazek@ivb.cz, reichard@ivb.cz
2. Institute of Vertebrate Biology of the Czech Academy of Sciences, Brno, Czech Republic; e-mail: , bartakova.v@ivb.cz