Conn. Gen. Stat. § 29-143q
(Formerly Sec. 21a-203). Duration of matches. Attendance of approved referee.
(b) No mixed martial arts match shall consist of more than five rounds. Each round shall be followed by a period of rest of not less than one minute.
(c) No boxing or mixed martial arts match shall be conducted unless a referee approved by the commissioner is in attendance and directs and controls the match.