"Hi, my name is Marta Migocka-Patszałek. I work at the University of Wrocław at the Department of Animal Developmental Biology. I teach and perform research. In our research we are using small tropical fish called zebrafish. The zebrafish up to third day post-fertilization is considered as a new approach methodologies. This approach combines complex life model but at the same time allow us to save higher evolutionally advanced animals. In our research of course we are taking care about ethical approach and we reduce, replace and refine our experiments to make sure that all animals are safe."