"I feel very good in this weight division, but I feel in two or three years, if Aldo decides to move up a weight division, I might do that, too," Barao recently told MMAjunkie.com.
Barao wants to be one of the rare UFC fighters to hold belts in more than one division.
"I used to fight at 66 kilos (145 pounds), but when we closed the deal with the WEC, our trainer decided that I needed to fight at bantamweight because I would never be champion since Aldo had been there forever," Barao said. "He wanted another champion on the team."
Barao used to compete at 145 pounds, but his last five fights have been fought at 135.
If Aldo moves up to 155 pounds, Barao would be in the mix for a title shot at 145 pounds.
"Actually, I'm naturally the same weight as Aldo, but I cut more to make weight," Barao said. "I think I would suffer a lot less. I sacrifice a lot by cutting. I'd be able to eat a little better and relax a little more.
Barao is set to defend his belt on at the UFC on Fuel TV 7 card set for Feb. 16.
"I think the weight cut is what makes me most nervous going into a fight. I get very neurotic. I would be much more relaxed."