“…In last 7 years, several new marine fish species are being evaluated as potential candidates for aquaculture production. In Southern Spain, studies on the reproductive cycles, nutrition, growth, histology and immune system of species such as Senegelese sole (Solea senegalensis), redbanded seabream (Pagrus auriga), common seabream (Pagrus pagrus), white seabream (Diplodus sargus), and meagre (Argyrosomus regius) are ongoing (Cardenas & Calvo, 2003;Prieto et al, 2003;Ponce et al, 2004;Manchado et al, 2005;Fernandez-Trujillo et al, 2006;Martin-Antonio et al, 2007;Cardenas & Manchado, 2008). However, the intensive culture of these new fish species has favoured the appearance of several outbreaks with varied mortality rates.…”