Diet ingredients,d15N bulk,d13C bulk Wheat gluten,0.920,-28.054 Wheat gluten,0.961,-27.768 Pea protein,4.335,-28.869 Pea protein,4.278,-28.796 Seaweed ,6.401,-21.379 Seaweed ,7.017,-18.589 Fish meal,12.008,-22.218 Fish meal,12.002,-20.060 Control feed for Palmaria,7.469,-21.943 Control feed for Palmaria,6.574,-22.483 Palmaria inclusion feed,6.766,-23.221 Palmaria inclusion feed,6.240,-23.374