A red tide was sighted during the past week, the Inter-departmental Red Tide Working Group reported today (July 11).

     On July 4, staff of the Marine Department spotted a red tide at Rambler Channel. The red tide has dissipated. No associated fish deaths have been reported as of today.

     A spokesman for the working group said, "The red tide was formed by Pseudo-nitzschia pungens, which is commonly found in Hong Kong waters and non-toxic."

     The Agriculture, Fisheries and Conservation Department (AFCD) urged mariculturists at the Ma Wan fish culture zone to monitor the situation closely and increase aeration where necessary.

     Red tide is a natural phenomenon. The AFCD's proactive phytoplankton monitoring programme will continue to monitor red tide occurrences to minimise the impact on the mariculture industry and the public.

Ends/Friday, July 11, 2025
Issued at HKT 14:45

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