Keen O. Rodney, 32, who splits his time between Florida and Montauk, was arrested last week on a felony assault charge after an alleged fight with his roommates over some fish, but asserted during his arraignment last Thursday that he was in fact the victim. He was defending himself, he said, when he swung a baseball bat at Omar Godfried Deer, breaking the man’s wrist. The fight happened at around noon on June 24. Mr. Deer told East Hampton Town detectives that he and Mr. Rodney had been roommates for the past few weeks on Second House Road, along with Mr.