Two teens are recovering from stab wounds after police say a fight broke out on a train and spilled onto a Pelham Parkway platform Thursday. Police say a group of teens started fighting around 8 a.m. on the 5 train and continued the brawl at a train station near the exit for Esplanade and Laconia avenues. Authorities say two boys were stabbed, leaving a bloody trail. Four teens were arrested. The subway station remained open while the investigation was underway.Police say the students attend Evander Childs High School and Global Enterprises High School.