How do I stop my two kids from fighting?

Sibling fights can be prevented. As a parent, you have to guide your children and teach them how to get along with each other. You have to intervene in your kids fights and resolve their conflict. Also every child has different temparement and differ in age. So you have to take care of each kid equally. No kid should feel left out. Spend time with your children and love them equally. Also you should define some family rules and children should be reminded these rules timely.  Also, children follow their parents. So first set a good example yourself.  Teach them skills for anger management. Explain them the difference between right and wrong.