TAMBUNAN, Feb. 7 -- The rising number of fish deaths at Sungai Tagal Kg Bambangan, here, have begun to worry residents due to repeat incidents several months ago.

The initial cases involved only palian fish, but the latest has affected several species, prompting questions over the cause.

Kg Bambangan Tagal Chairman lodged a report with the Tambunan District Fisheries Officer. "Several months ago, it was palian, but this time almost all types of fish in this river have died," he said.

"We are very worried about the long-term impact on the river ecosystem and the villagers' livelihoods."

Tambunan District Fisheries Officer Dennis Anthony said they have taken immediate steps to conduct investigations.

"We hope the research team will be ...