Hong Kong authorities have released 83,500 juvenile fish into waters near the airport and other locations as part of a string of events intended to enrich marine resources. The initiatives by the Airport Authority and the Agriculture, Fisheries and Conservation Department on Friday marked the annual National Fish Releasing Day on June 6. The authority, which oversees the city’s airport, released 60,000 “larger-than-fist-sized” fish into a vessel-prohibited area west of the airport’s central...