"All of us are on the same page," Predators center Ryan Johansen said. "We're playing a team game. You look at all the teams that are successful at this time of the year, and in the postseason it's the depth of your team that comes out and we've got a lot of guys stepping up."
WATCH: All Predators vs. Islanders highlights
Josh Bailey scored and Thomas Greiss made 28 saves for the Islanders (35-28-12), who have lost back-to-back games and five straight at home (0-4-1). They trail the Boston Bruins by two points for the second wild card into the Stanley Cup Playoffs from the Eastern Conference and were passed in the standings by the Tampa Bay Lightning, who won 5-4 in overtime against the Chicago Blackhawks on Monday.
Boston is home against Nashville on Tuesday. The Islanders and Lightning don't play again until Thursday.
The Islanders also lost 2-1 to the Bruins on Saturday. They are 3-4-1 since playing nine straight games on the road from Feb. 21-March 11.
"Just pizzazz, you know, that jump," Islanders coach Doug Weight said of what has been missing lately. "I've been through it [as a player] where you have to be at the top of your level for the last 4-6 weeks, trying to make the playoffs and every game is a playoff game. It's tough. We've got to find a way to dig deeper and try to put games together."
The Predators had a 2-0 lead on goals from Fiala, his ninth, at 10:17 of the first period and Arvidsson, his 29th, at 3:15 of the second.