Roussel and Vlasic tussled during the final minute of the Sharks' 4-0 win. Vlasic's fist was against the side of Roussel's head, and as Vlasic pulled his arm away, Roussel bit him.
The $5,000 fine is the maximum allowable for biting under the collective bargaining agreement, according to the NHL Department of Player Safety.
Roussel and Vlasic were both given two-minute penalties for roughing, with Roussel getting another two minutes for cross-checking and 10 minutes for misconduct. Roussel also picked up a pair of penalties in the first period, for elbowing and delay of game.