Enhanced aquaculture feeds

摘要: There is provided a method of improving the nutritional content marine worms, such as polychaetes, by feeding worms diet having concentration pigments, polyunsaturated fatty acids, lipids, vitamins and/or minerals sufficient to enhance level components) within tissue worms. The can then be used for aquaculture, example in farming fish shrimps. One component particular benefit astaxanthin, which preferably present polychaete at least 200ppm. Advantageously fed will include l0a weight vegetate oil. Conveniently may dried lyophilisation or refractance window drying before optionally being included formed into pellets aquaculture other (i.e. aquarium) use.