It is illegal to "target" a species using "typical" tackle used to catch them. (a game warden told me) that anchoring over a school of rolling humpies and you're throwing a pink humpy special spoon......you're getting a ticket.

However, Leadthrower is right. Some lure, i.e. Dick Nites, can catch many different types of fish. If you're using a Dick Nite on closed humpy water, it better not be pink. And I would stay away from the rolling schools. You'll catch a cutt, steelie, and maybe a humpy, but you're not "targeting" them. Which poses this question: If I have caught my limit of salmon in a river and my fishing partner has one more fish to catch, can I keep on fishing? The law says no, but what if I am using a Dick Nite and I am trying to catch a cutt?