Phak Seangly

Hundreds of kilograms of dead fish have washed up on the shores of the Mekong in Stung Treng’s Thala Barivat district in the past month, and while environmental activists blame construction of the controversial Don Sahong dam upstream, officials yesterday said the fish are being “poisoned” by Lao fishermen.

“We saw that a lot of dead fish flowed from the upper Mekong in Lao,” said O’Svay commune chief Roth Sun, who believes the fish were poisoned near the border.

Villagers have collected some 400 to 500 kilograms of fish, and several fell ill from eating them, Sun said, adding that commune authorities found cooked rice with a “blue substance” inside the fish bodies, prompting them to warn villagers against eating the fish.

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"the fish are being poisoned by Lao fishermen."

If you watch the "Nomads of the Amazon Rainforest (1984)" they poisoned fish with a plant. But it wasn't blue. Very few plants in nature are blue.

It doesn't make sense for "fishermen" to poison fish with a synthetic poison that makes you sick.