Fighting Boars?

[Reese & Rollo]

I have two male pigs, who live in a 2x4 C&C cage, I adopted them as a bonded pair from the humane society. I believe they are brothers, so I'm assuming they have been together their entire lives(they're about a year).
Recently, they have been fighting more and more often, they don't hurt each other, but I'm afraid it might come to that. My dominate boy(Rollo), will chase the other(Reeses) around the cage, and Reeses hates it, he chatters, his fur puffs out and he tries to hide, but Rollo always hunt him down. It lasts a few minutes, before they go their separate ways.
I have a female pig, who's normal housed above them, I've moved her away, and still they fight. My biggest fear is that they hurt each other and I'll have to separate them. I don't have enough room to make them each a bigger cage, so they'd be stuck in 2X2 cages.

Any ideas on what I should do? I'm at a loss at this point.

 

[Briony_S]

It would be better with them on top and girl underneath that way any bedding etcc which falls from her cage and smells of her wont land on them.

 

[Briony_S]

Also as they havent drawn blood a bath together may help improve the bond

 

[Reese & Rollo]

I can't put on her on the bottom, she's only in a 2X2 cage(I know, bad), plus they use fleece so, nothing is really falling in their cage. She was next to them for awhile, but she is now across the room, so they can't really see or smell her as well.
A bath is a good idea, I'll have give them both a bath when bath time comes around again.

 

[piggylover]

your pigs are still adolescents so this is probably whats making them chase each other etc , if they haven't drawn blood and neither of them is losing weight I would just keep a very close eye on them xx. Maybe it might be better to move the female into a completely different room just incase its her that's getting them going through the constant dominance routine xx