© 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ An insight into piscidins: The discovery, modulation and bioactivity of greater amberjack, Seriola dumerili, piscidin. Douglas John Milne a , Álvaro Fernández-Montero b , Manu K. Gundappa c , Tiehui Wang a , Félix Acosta b , Silvia Torrecillas b , Daniel Montero b , Jun Zou a,d , John Sweetman e , Christopher John Secombes a,* a Scottish Fish Immunology Research Centre, School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, UK b Grupo de Investigación en Acuicultura (GIA), Instituto Universitario ECOAQUA, Universidad de Las Palmas de Gran Canaria (ULPGC), Crta. Taliarte s/n, 35214, Telde, Las Palmas, Canary Islands, Spain c Institute of Biological and Environmental Sciences, University of Aberdeen, Tillydrone Avenue, Aberdeen AB24 2TZ, UK d Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China e Alltech Aqua, Cephalonia, Greece *Corresponding author. Email: c.secombes@abdn.ac.uk