No person may take, catch, kill, or have in the person's possession or under the person's control any fish smaller than that prescribed by the governor's order and proclamation. Any person catching a fish under the legal size limit shall immediately return it to the water with as little harm as possible.
N.D. Cent. Code § 20.1-06-03
Legal size of fish
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.