Canada's Cooke Aquaculture is in early discussions with Washington state officials to potentially raise rainbow trout in its Atlantic salmon pens, which are set to be phased out of existence by 2022.

"We're having those discussions now," Cooke's Joel Richardson told IntraFish. "If and when we transition to another species, we would work with the state on the permitting specific to another species."

Richardson said the timeline for that transition is not yet solidified, but could happen when the company's remaining salmon net pens are no longer allowed to be used for farming Atlantic salmon.