(2) Any rainbow trout, Oncorhynchus mykiss, including steelhead trout taken as an incidental catch, by any person fishing commercially shall be returned immediately to the water and shall not be bought or sold within the state.
(3) Nothing in this section is intended to affect Indian fishing rights as granted by federal treaties. [1975 c.1 §2 (enacted in lieu of 509.030); 1987 c.199 §1; 1991 c.47 §1]