Police are looking for witnesses to the altercation which happened outside De Gruchy at around 4.45 pm.
The two boys – believed to be around 16 or 17 years old – left the area after the fight was broken up.
One of the boys has been described as mixed race and wearing shorts.
Anyone with information is being asked to contact States police on 612612 or Crimestoppers anonymously on 0800 555111.
