“…TPL content of sardine fillet was found to be significantly higher compared to the one of TNL, probably due to the fact that only the fish consumable tissue and not the fish head, viscera and bones, which contain higher amounts of TNL [23,24], had been extracted. In addition, the lipid composition of cod [25] and sardine [15,26] has been found to vary due to several factors such as age, sexual maturation, feeding and fasting state, activity level, size, genetics, nutrient composition and energy content of the diets, seasonal change and area of capture.…”