A substitute math teacher was arrested Thursday for allegedly running a "fight club" in his classroom at a Connecticut high school. Police charged Ryan Fish with reckless endangerment, risk of injury to a minor, and breach of peace. The 23-year-old was arrested after the Montville Police Department conducted a months-long investigation into allegations that he was supervising several organized fights between students at Montville High School last October. Police began investigating Fish last December after a Department of Children and Families social worker reported that a 15-year-old student showed signs of being "traumatized" after he said he'd been robbed and beaten at the school,