Size of the peduncle says chum. Pic of the caudal? Based on that photo there appears to be a considerable fork. But the photo cuts it off. Color says sockeye obviously, but based on what I can see of the tail/wrist, Chum. Trick question without a tail shot. Ocean chums glimmer in the sunshine too! Based on how hard that particular fish pulled you could tell. Big sockeye don't pull like smallish Chums in the salt.