Wyo. Stat. § 23-4-104
Any person who, without consent of the owner, intentionally removes, destroys or introduces a substance into the waters of another with intent to destroy, any fish in a fish hatchery, artificial lake, pond including a catch out pond being used as a commercial aqua-culture operation is guilty of a misdemeanor punishable by imprisonment for not more than six (6) months, a fine of not more than seven hundred fifty dollars ($750.00), or both, if the value of the fish destroyed is not more than five hundred dollars ($500.00), or a felony punishable by imprisonment for not more than ten (10) years, a fine of not more than ten thousand dollars ($10,000.00), or both, if the value of the fish destroyed is more than five hundred dollars ($500.00).
W.S. 23-4-104