It's normal for siblings to fight, but you should ALWAYS try to prevent the fights! Here's how:
-Think "Is it really worth it"
-If he is bothering you, step away or ignore him.
-Find something you both like, in other words- bond.
-Try to understand each other (ex: Don't pick a fight if they're having a bad day)
- Avoid triggering topics
-tell your parents/guardian.