6 guys a side including the goalie.
Unless your the Penguins, then it's o.k. to have seven for undetermined periods of time.
Hitting someone with your stick will also result in a mandatory one game suspension. Unless your the Penguins, down 2-0, and your one of the leading goal scorers on the team. Then it will be overlooked :ermm:
To all the Penguin fans reading this, yes, I am a whining bitch!