My understanding right now is that the majority of people who are growing fish in these small facilities are using Pacific salmon. I know that SweetSpring Aquaculture in Puget Sound is growing coho. Swift, I believe, is coho as well.
From my experience, and I've been 25 years in and around this industry, is that you work with what you know. Both of these groups started with these fish some years ago and they've gone through a process of refinement with their brood fish over the years and are continuing to use a species that is adapted to their particular technology, which they trust. They know how it's going to perform.
Sweet Springs is now selling to one of the larger suppliers in Vancouver, and that's brought some exposure to that facility and, I believe, it's bringing some more interest in others who are wanting to experiment and develop the coho as well.
So I think it's more along those lines than not wanting to work with the Atlantic salmon. I know that other groups are still looking at Atlantics to experiment with.