The card goes down Super Bowl weekend from Las Vegas. UFC featherweight champion Jose Aldo will defend his title against ex-UFC lightweight champion Frankie Edgar in the main event.
Fitch (24-4-1) earned a win over Erick Silva last month. In doing so, Fitch improved to 6-1-1 in his last eight fights, but scored his first victory since 2010.
Maia (17-4) has won both of his welterweight bouts since moving down from the middleweight ranks. He is 5-2 in his last seven fights overall.