Pushing and shoving began in the final seconds of the first half when a fan dressed as a referee ran onto the field. The incident soon escalated into a bench-clearing fracas in which punches were thrown.
Game officials ejected UCLA receiver Taylor Embree and Arizona cornerback Shaquille Richardson for their part in the fight and they were also handed a one-game suspension by the conference Friday after a study of the game video.
"The conference is extremely disappointed in the actions of the student-athletes involved in this incident," Pac-12 Commissioner Larry Scott said. "It is unacceptable behavior and violated conference rules, as well as NCAA fighting rules.
"I have taken these actions today because it is imperative that we hold our student-athletes and coaches to the highest standards of sportsmanship."
One-game suspensions were issued to UCLA receivers Randall Carroll, Shaq Evans and Ricky Marvray and Arizona cornerback Jourdon Grandon.
UCLA defensive back Cassius Marsh received a two-game suspension. A half-game suspension was dealt out to UCLA offensive guard Alberto Cid and Arizona defensive backs Lyle Brown and Mark Watley.
Arizona won the contest 48-12.
The Southwestern Athletic Conference this week suspended 41 players for at least one game following last week's brawl during a meeting between Southern University and Arkansas-Pine Bluff.