Who cares if its closed for salmon.......

He didnt say he kept any. As long as its open for some species means you can fish and if you catch coho than you catch coho.

I fish a lot of places that are open for steelhead and not coho but have tons of coho. Dosent stop me from CnR ing a few Coho just for fun. If you know how to handle the fish to make for a safe release than there should be no problem.