That means the fishery would be closed down once a certain number of Chinook are taken as bycatch.Chinook bycatch last year in the Gulf pollock fishery was an alarming 43,915 fish, according to the chart on page 21 of the analysis.A hard cap, if approved, could be implemented in mid-2012.The analysis says addressing Chinook bycatch in the Gulf is the council's highest priority.