Biochemical analysis (moisture and ash content, total nitrogen, total lipid, fatty acids) of unsorted mesopelagic catch from in the Northeast Atlantic

During three cruises in the Mid Atlantic Ridge area in 2016 and 2017, we collected samples of mesopelagic species down to a depth of 600 m and analysed the chemical composition of the catch samples. We present gross proximate composition (g /100 g fresh weight) and fatty acid composition (% of total fatty acids) in mesopelagic raw material samples (values are mean ± standard deviation of 2–4 samples).