A Scottish Government watchdog has been caught advising a pesticide company on how to avoid disclosure under freedom of information law.
Fish farming provides jobs on Skye, but some locals are concerned about its environmental impacts.
The Scottish Government has launched an investigation after receiving complaints from environmental conservationists over the use of “seal scarers” by a company which has fish farms in Argyll and Bute.
The Scottish Government is paving the way for the multinational salmon farming industry to start using a toxic pesticide blamed for killing bees.
Salmon suffering at Scottish fish farms is “endemic” and in breach of animal cruelty law, according to an undercover investigation by animal welfare campaigners.
Nearly half of Scotland's salmon farms burn, dump or destroy millions of dead fish every year.
As farming of sea bass and sea bream has grown in Greece and Italy, so have environmental concerns.
Fish farmers in Scotland are permitted to use 16 "toxic" chemicals to kill parasites and fungi, control infections and anaesthetise fish.
Scottish Government research into pesticides used to control the lice that infest farmed salmon deliberately excluded impacts on the “wider marine environment”.