Six fish farming companies in Scotland given government handouts of over £10 million have made profits of £926 million since 2010.
The Scottish Government has reprimanded salmon farming companies for breaking the rules on shooting seals - but has not taken any further action.
A salmon farming company has been reprimanded for feeding a toxic pesticide to fish twice as often as permitted and breaching a safety limit.
The Scottish Government defied concerted pleas by salmon farming multinationals to keep photos of diseased and damaged fish secret, according to internal emails.
Government investigations of alleged animal cruelty after lice-infested salmon were filmed at a fish farm on the island of Lewis have been branded a “whitewash”.
Nearly 200 fish farms are allowed to use a carcinogenic chemical called formaldehyde which is used to embalm corpses.
Scottish Government inspectors have launched an investigation into video evidence of alleged animal cruelty at a salmon farm on the north west coast.
At least nine million fish have been killed by diseases, botched treatments, poor handling and other problems at salmon farms around Scotland since 2016.
The £2 billion salmon farming industry marketed around the world as Scottish is virtually all owned by investors in Norway, Switzerland, Cyprus, Canada and other countries.