Catherina G. Becker is a senior lecturer and Thomas Becker is a senior researcher at the University of Edinburgh, UK. They are collaborating on spinal cord regeneration in adult zebrafish. Throughout their careers, the editors have shared a keen interest in central nervous system regeneration in different model organisms. They began their work in 1993, when both received their PhDs form the University of Bremen, Germany, for the analysis of central nervous system development and regeneration in amphibians. Catherina and Thomas Becker continued their studies, focusing on the role of cell recognition molecules in zebrafish, during postdoctoral studies at the Swiss Federal Institute of Technology in Zurich, Switzerland, the University of California at Irvine, USA, and at the University Hospital in Hamburg, Germany. From here they moved their group to Edinburgh. Their research has been continually supported by prestigious national and international fellowships and research grants.