Fishery managers from Oregon and Washington extended Chinook retention on the mainstem Columbia River through the end of the year during a joint state hearing.   With coho retention already scheduled to be open thru December 31, anglers can now keep both Chinook and coho through the end of the year.  From West Puget Island to the Highway 395 Bridge at Pasco, the daily adult bag limit through October is two salmon, Chinook or coho, but only one may be a Chinook.  In November and December, the daily adult bag limit is two Chinook, coho, or hatchery steelhead, but no more than one may be a Chinook.  Any wild coho caught downstream of the Hood River Bridge must be released.