sera FD Bloodworms Nature is the treat consisting of 100% bloodworms for all predominantly carnivorous fish. Due to the excellent acceptance and the high protein percentage, bloodworms - which are very popular food also in nature - are particularly well suited for finicky animals (e.g. newly added fish not accustomed with dry food). The wholesome composition additionally supports the success of breeding attempts and supports the healthy development of juvenile fish. Due to the gentle freeze drying the valuable nutrients of the natural food are fully retained.