Salmon fishing is definitely open in Saanich Inlet. I got a 2nd follow up call yesterday to confirm, and the officer asked me to "spread the word". Apparently they had had a lot of calls about this.
As far as prawning goes, it looks to be closed. In the area 19 page, listed under the "other invertebrates" page, it states that the inlet is closed. This page was last updated March 21st, and there is a yellow header at the top stating that theyre in the process of updating their online data, and to check with the FN system for current info. So unless there is a FN that explicitly says the inlet is open to prawning, Id err on the side of caution.