That is true, but only if the special regulations list adipose finclipped coho as open for a particular water body. Anglers also need to be aware that closing dates for these fisheries may be different between different river systems or bays that are open to a coho fishery. Following regulations that protect coho stocks on coastal streams is important to allow angling for other species such as chinook and steelhead. Oregon State Police report that some anglers are targeting coho in streams closed to coho angling and others need to carefully distinguishing between chinook and coho. One of the best identifying marks is the lower jaw at the base of the teeth.
Chinook have a black gum and coho have a white gum.
Anglers can also refer to page 36 of the 2000 Oregon Sport Fishing Regulations to learn the differences between the two salmon species. In addition, all cutthroat trout must be released in all of the coastal streams.