Salmo g.

To answer your initial question, harvest trout is a laymen term for sea-run cutthroat, which tipically run in the late summer early fall (talk about a fishery almost wiped out). Blue backs is a term you see posted on the Army Corps of Engineers dam counts on the Columbia and refers to sockeye. Notice how few blue backs are counted (every now and again one makes it all the way back to Redfish Lake Idaho).