(2) It is unlawful to:
(a) Take, buy, sell or possess immature salmon less than 20 inches or mature salmon less than 15 inches in length, taken in any waters of this state, at any time or in any manner except by angling.
(b) Take, molest, kill or injure, in any manner at any time, or expose for sale or have in possession, except for the purpose of propagation when authorized by law, any spawning salmon.
(3) Notwithstanding subsections (1) and (2) of this section it is lawful to take precocious salmon commonly called jack salmon less than 15 inches in length from the waters of this state, except the Pacific Ocean and to buy, sell or possess such salmon.
(4) To further protect immature salmon the State Fish and Wildlife Commission may establish by rule a minimum size for any species of salmon which is greater than 20 inches. [Amended by 1965 c.570 §97]