The European Training Network RIBES “River flow regulation, fish BEhaviour and Status”, funded by the European Commission under the EU Horizon 2020 programme Marie Skłodowska-Curie Actions Innovative Training Network (Grant no. 860800), announces 15 POSITIONS FOR EARLY-STAGE RESEARCHERS (ESRs) giving the opportunity of being awarded a Doctoral Degree, with innovative complementary training activities and attractive travel, laboratory and research opportunities.