Fish farmers in Scotland are permitted to use 16 "toxic" chemicals to kill parasites and fungi, control infections and anaesthetise fish.
A west coast island sold off by the National Trust for Scotland should be maintained and monitored in the long-term due to its considerable scientific interest and nature conservation importance, according to an ecological survey.
The National Trust for Scotland sold off the 90-acre Isle of Insh for £353,000, even though it's former owner wanted it to stay in a natural state.
The multinational salmon farming industry has been pushing behind the scenes for environmental limits on a toxic pesticide to be 100 times weaker than government regulators recommend.
The Scottish Government is facing unprecedented pressure to overhaul its plans to cut climate pollution from farming from a powerful alliance of food and environment groups.
The Scottish Government put pressure on its environmental watchdog to drop a plan to ban a toxic pesticide so as not to upset the fish farming industry.
The fish farming industry had to throw away up to ten million salmon last year because of diseases, lice and other problems.
The Scottish Environment Protection Agency is under angry attack from the fish farming industry over new controls on toxic pesticide.
The Scottish Government allowed a US drug company to secretly rubbish a scientific study blaming one of its pesticides for killing wildlife.