Conn. Gen. Stat. § 53-201

Any person who is present at any prize fight, to aid, abet or assist therein, or give countenance thereto, or who aids or encourages such fight in this state, without being present thereat, shall be imprisoned not more than two years or fined not more than three thousand five hundred dollars, or both. The provisions of this section shall not apply to (1) professional boxing or mixed martial arts matches held or conducted under the laws of this state, or (2) amateur boxing or mixed martial arts matches held under the provisions of section 29-143j or under the supervision of any school, college or university having an academic course of study or of the recognized athletic association connected with such school, college or university.