What is Spironucleus salmonicida? In February, salmon producing giant Grieg Seafood revealed that the Spironucleus salmonicida parasite had cost the company some $90 million in downgraded fish since 2022. This micro-parasite, responsible for causing systemic spironucleosis in salmon, has become a significant concern for fish farms. But what exactly is this parasite and how does … Continue reading Spironucleus salmonicida: Inside the ‘salmon killer’ parasite