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The Flux Daily

Red tide continues to affect Brunei coastal waters

Laboratory tests confirm the presence of a toxin‑producing organism in Brunei’s coastal districts, while other reports question its toxicity.

By The Flux DailySource: english.news.cn2 min read

In brief

Brunei’s Department of Fisheries reports that a red tide organism remains in the waters of Belait, Tutong, and Brunei‑Muara districts, citing laboratory data from October 30 to November 3. The agency urges the public to avoid consuming small fish, shellfish, or dead fish. Contrarily, a post on the Borneo Bulletin’s Facebook feed claims scientists have confirmed the bloom is non‑toxic. The uncertainty over the organism’s danger remains unresolved.

On Tuesday, the Department of Fisheries in Brunei announced that laboratory analyses conducted between October 30 and November 3 detected a red‑tide organism in the coastal waters of the Belait, Tutong and Brunei‑Muara districts. The data came from samples taken during a routine monitoring campaign and were confirmed by the Fisheries Department’s research team.

The organism, identified as a species of dinoflagellate that can release toxins, prompted the authorities to issue a public warning. The Fisheries Department, as reported to the official media Pelita Brunei, cautioned residents against collecting or eating small fish, any type of shellfish or fish found dead, citing the potential risk of toxin ingestion.

During the same week, a post on the Borneo Bulletin’s Facebook page stated that scientists had examined the bloom and determined it was non‑toxic. The post, shared on November 3, summarized that the algal growth would not kill marine life that came into contact with it, apparently downplaying the health warning issued by the Fisheries Department.

The Borneo Bulletin’s online edition, which listed a “Red tide persists in coastal waters” headline on November 3, echoed the Department’s finding of continued presence of the organism. While the editorial content did not elaborate on toxicity, it confirmed the ongoing detection in local waters.

These reports create conflicting narratives about the danger posed by the red tide. The Fisheries Department, emphasizing the potential release of toxins, recommends avoidance of certain seafood. In contrast, the Facebook claim of a non‑toxic bloom suggests that the organism may pose no health risk, though it does not negate that it is present.

Public guidance issued by the Fisheries Department includes specific restrictions on small fish and shellfish consumption, and a ban on harvesting dead fish from affected areas. The department’s advice appears to err on the side of caution until more detailed toxicity testing can definitively rule out toxin presence.

Public response and further monitoring

Local fishermen report that catching fish in the Belait and Tutong estuaries remains possible, but many have heard advisories and are exercising caution. The fisheries authority has increased sampling frequency, collecting new water and fish tissue samples every 48 hours to track the organism’s spread and any changes in toxin production.

Meanwhile, the Borneo Bulletin’s Facebook post has spurred debate among residents, with some trusting the live‑streamed experts’ assertion of non‑toxicity, while others see the Fisheries Department’s advisory as the more prudent guidance. No official statement has yet processed the Facebook claim through an independent laboratory certification.

Future updates from the Fisheries Department are expected as international labs undertake cytotoxicity assays. The next public bulletin is scheduled for the week of November 10, when the Department will release follow‑up results on both organism prevalence and toxin concentration.

At this time, the key uncertainty that members of the public and marine scientists share is whether the red tide organism’s toxin output remains low enough to avoid health risks. The divergent conclusions of the Fisheries Department’s warnings and the Borneo Bulletin’s Facebook assessment illuminate this uncertainty. Until conclusive laboratory results confirm the level of toxins, the risk to seafood consumers remains an open question, and authorities recommend erring on the side of avoidance for small fish, shellfish and dead fish from affected waters.

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