Since the 2008-09 season there has been a lot less blood on NHL ice. According to hockeyfights.com the rate of fights per game in the NHL has been in steady decline over the past nine seasons.
Back in 2008-09 season, when the Rangers traded Petr Prucha to the Phoenix Coyotes, there were 0.60 Fights per Game and 41.38% of NHL games had fights. Last season there were 0.28 Fights per Game and 23.41 % of games saw players dropping the gloves.
Despite there being a great deal less fighting than their was a decade ago some teams, like the Anaheim Ducks and the Columbus Blue Jackets, still regularly ice down their knuckles after games.