As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOR FLIGHT 3325 THE CREW REPORTED THE AIRCRAFT CABIN HAD A STRONG ODOR OF FISH. THE CREW RECEIVED MANY COMPLAINTS FROM THE PASSENGERS. THE AIRCRAFT WAS REMOVED FROM SERVICE. INTERIOR CLEANING AND DISINFECTING OF FISH ODOR IAW STANDARD PRACTICES. THE AIRCRAFT WAS RETURNED TO SERVICE.