Source: Berita Harian
22nd February 2018;
The mass surfacing and and subsequent dying of aquatic life, particularly lobsters prawns and fish, in Oya River, Dalat that went viral on social media could have been caused by many factors, including poisoning.
Nanoplankton specialist Musa Musbah said 20 to 30 years ago, such phenomenon occurred not only in Dalat river but also in other rivers in Sarawak including in Niah and Sibuti areas in Miri, with varying degrees.
He was asked to comment on the so-called ‘drunken phenomenon’ of aquatic life in Oya River, which drew many comments on his Facebook page.
Musa reminded those who doubted the safety of such prawns or fish sold in the market to temporarily avoid eating them until the authorities come up with their findings and give assurance that whatever is caught from the river is safe to consume.
He did not deny that there might be some individuals who used poison to catch fish and prawns due to ignorance on its impact on health, while there might be others who did it for quick profit.
Meanwhile, Natural Resources and Environment Minister Dato Sri Wan Junaidi Tuanku Jaafar was reported in the local media as saying that the Department of Environment (DoE) would investigate and study the causes of the phenomenon.
Source: The Borneo Post
Those are not lobsters, but Giant River Prawns (Macrobrachium rosenbergii), while the fish in the photo appears to be a Helicopter Catfish (Wallagonia leerii).