Tapeworm in salmon (IMAGE) Norwegian University of Science and Technology Caption The tapeworm in salmon has its own microorganisms which in turn have their own DNA, which may affect the health of the fish. Credit Photo: Martin Nielsen, HoloFish Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.