There seems to be an overwhelming negative opinion associated with genetically altered salmon. Even though they grow faster, according to this same documentary, they are less capable of survival in the wild.

So if some escape, (which is probably inevitable), and then mate with wild fish stock, then presumably we have artifically introduced a trait which is bad for the whole species.

I think the book is still out on gene-altered salmon. Probably worth more research before going forward on this track.

The thing that concerns me is that the current DC Administration is about to push a huge aquafarming initiative under the guise of "national security" -- ie we need to protect our food resources. If that happens they could use security as an excuse to bash through a bunch of ill thought out plans. As usual, people are the most scary, and politicians the worst of them all.