The Scottish salmon industry harvested a record-high 189,707 tonnes last year, an increase of 26,890 tonnes (16.5%) on 2016, according to the newly-released Scottish Fish Farm Production Survey.

The scientist leading a study that has provided the first evidence of the evolution of infectious salmon anaemia (ISA) from a non-virulent to a virulent strain has warned of the dangers of rarely-cleaned RAS biofilters at smolt farms.