59.3 million Norwegian farmed salmon were lost from production between sea-transfer and harvest (ongrowers), of which 52.8 million were categorised as mortality-related. This high number can be partly explained by losses associated with algal blooms in Nordland and Troms, which alone killed approximately 8 million fish. If excluded from the total picture, total mortality (approximately 45 million) was at a similar level as 2016 and represents a slight reduction from 2018.
Fish Health Report 2019 (preliminary version)
The annual ‘Health Situation in Norwegian Aquaculture’ report describes the health and welfare situation of all aquatic organisms farmed in Norway as well as the state of health of wild Norwegian salmonids.