Changes in fish farming keep salmon on the table

What's going on with the commercial fishing industry these days? My fish guy just told me that all commercial salmon fishing from Vancouver to Mexico has been banned for the next two years due to overfishing, a problem that seems to be affecting the whole planet. But there is hope, due to some rather ingenious farming methods which address the problems which have made "farm raised" on the package the skull-and-crossbones equivalent.